What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
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363-131 121-55A 14-.5
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Class Number: 441 Class Title: BUOYS, RAFTS, AND AQUATIC DEVICES Subclass Subclass Number Title 1 BUOY 2 .With means to call buoy to surface 3 .For mooring a vessel 4 ..Having liquid cargo transfer means 5 ...Having swivel coupling for cargo conduit 6 .Marker buoy 7 ..Having means to release buoy upon submergence 8 ...Water soluble or water weakened member 9 ...Gas assisted 10 ...Responsive to hydrostatic pressure 11 ..With signalling device 12 ...Audible 13 ...Illuminating 14 ....By combustion of fluid 15 .....Fluid produced by chemical reaction with water 16 ....Electric light 17 .....Having water activated switch 18 .....Having water activated battery 19 ...Smoke producing 20 ...Reflecting means 21 .Having means to control attitude or position 22 ..Fluid reaction surface 23 ..Tether 24 ...Having playout means 25 ....Having means to control playout 26 ....Reel for tether 27 ....Having seat for buoy 28 ..Having ballast means 29 ...Variable ballast 30 .Inflatable 31 ..Having chemical reactor to produce gas 32 .Container type 33 ..With means to release transponder, sensor, etc. 34 ..Storm oil distributor 35 RAFTS 36 .With signal device 37 .Having water reactant stabilizing means 38 .With shelter 39 .Having boarding aid 40 .Inflatable 41 ..Having inflation valve means 42 ..Having storage container for raft 43 .Having centrally located suspended basket 44 .Columnar flotation member 45 ..Hollow 46 ...Barrel or drum 47 .Formed from log or other product 48 ..Booming 49 ..Cribbing 50 ..Coupling means 51 ...Dog 52 ...Clampp 53 ...Transverse rigid member 54 ...Encircling flexible member 55 SWIMMING AID TO INCREASE STROKE EFFICIENCY 56 .Hand attached, held, or worn 57 ..Having finger stalls (e.g., gloves) 58 ..Secured to hand by strap 59 .Arm attached 60 .Leg attached 61 .Foot attached 62 ..Repositioned by biasing means 63 ..With lock or latch 64 ..Flipper 65 WATER SKIMMING OR WALKING DEVICE 66 .Inflatable 67 .Circular 68 .Water ski 69 ..Ski tow handle 70 ..Ski binding 71 ..With rooster tail producing means 72 ..With seat 73 ..Having connecting means 74 .Surfboard 75 .With lashing 76 .Water walking device (e.g., water shoes) 77 ..Having pivoted traction flap 78 ..Spheroid or wheel-like device encircling walker 79 .Having stabilizing surface 80 WATER RESCUE OR LIFE PROTECTING APPARATUS 81 .Tossable apertured member (e.g., ring) 82 .For use over ice 83 .Air-sea rescue device 84 .Lifeline 85 ..Having line propelling means 86 .Buoyant shark screen encircling user 87 .Passenger enclosing bouyancy device 88 .Personal flotation device 89 ..With signal means 90 ..With mechanical inflation means 91 ...By pump 92 ...By compressed gas means 93 ....With puncturing means 94 .....Lever actuated 95 .....Actuated by water softened or soluble member 96 ....With control valve 97 .....Actuated by water softened or soluble member 98 ...By gas generation from chemical reaction 99 ....With manually operated valve 100 ....With soluble or deformable element 101 .....With cutting, punching, or striking means 102 ..Body suit 103 ...Full length 104 ....With hood 105 .....With mask 106 ..For torso 107 ...With sleeve 108 ...With buoyancy means substantially encircling the torso 109 ....And attached hip boot 110 ....And leg or foot strapp 111 ....And support passing over the shoulder 112 .....Having buoyancy means 113 ....Buoyancy means is a continuous member 114 ...With buoyancy means on the back 115 ....And front 116 .....And shoulder 117 ...With buoyancy means on the front 118 ....And shoulder 119 ...With buoyancy means on the side 120 ..Trunks or shorts 121 ..Suspender 122 ..Arm encircling means 123 ..Neck encircling means 124 ..Head gear 125 .Convertible use article 126 ..Seating means 127 ...Cushion 128 ..Berth 129 BODY SUPPORTING BUOYANT DEVICE 130 .With seat 131 ..Annular buoyant member 132 ..U-shaped buoyant member 133 BUOYANCY PROVIDING ATTACHMENT FOR PIPE, LOG, OR LINE 134 .Float for log 135 BUOYANCY UNDERWATER VIEWING DEVICE 136 MISCELLANEOUS