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Class Information
Number: 441/44
Name: Buoys, rafts, and aquatic devices > Rafts > Columnar flotation member
Description: Device wherein the raft has an elongated buoyancy providing member having a cross-section with a periphery of a shape similar to a circle, or multiple sided geometric figure.

Sub-classes under this class:

Class Number Class Name Patents
441/45 Hollow 12

Patents under this class:

Patent Number Title Of Patent Date Issued
6598552 Pontoon having a cross section with a non-uniform diameter and boat having same Jul. 29, 2003
6199676 Inflatable tubular structure with spiral seam Mar. 13, 2001
5707724 Fractal tube reinforcement Jan. 13, 1998
4919632 Collapsible one-man pontoon fishing raft Apr. 24, 1990
4886015 Modular flotation support collar assembly for aquaculture fish pen Dec. 12, 1989
4843992 Air tube protected by belts Jul. 4, 1989

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