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Browse by Category: Main > Transportation & Automotive
Class Information
Number: 441/135
Name: Buoys, rafts, and aquatic devices > Buoyancy underwater viewing device
Description: Device facilitating below the surface observations usually including a buoyant platform and a window located on the platform and below the water surface.










Patents under this class:

Patent Number Title Of Patent Date Issued
7927164 Underwater viewing unit for an air mattress Apr. 19, 2011
7547238 Floatable water board with underwater viewing assembly Jun. 16, 2009
7507132 Transparent surfboard with shark locating and repelling system Mar. 24, 2009
7484468 Buoyant mount for supporting cinematographic apparatus Feb. 3, 2009
6900954 Viewing enhanced apparatus for visibility impaired fluid May. 31, 2005
6892672 Apparatus for breeding fish in open sea May. 17, 2005
6572424 Personal swim craft with an underwater viewing area Jun. 3, 2003
6394868 Floatation device for a child May. 28, 2002
6293841 Foldable under water viewing window Sep. 25, 2001
6241569 Sea windows for rafts Jun. 5, 2001
6076479 Device to observe the sea bed from the deck of a vessel Jun. 20, 2000
6033276 Personal water vehicle Mar. 7, 2000
5954558 Underwater viewing device Sep. 21, 1999
5685753 Floating device Nov. 11, 1997
5678091 Turbid water displacement viewer for vidio and the like Oct. 14, 1997
5672082 Floating underwater viewing device Sep. 30, 1997
5599220 Method and apparatus for viewing objects underwater Feb. 4, 1997
5595133 Underwater viewing surface watercraft Jan. 21, 1997
5476055 Watercraft with underwater viewing port Dec. 19, 1995
5447459 Underwater viewing board Sep. 5, 1995
5399111 Watercraft Mar. 21, 1995
5145431 Aquatic viewing apparatus Sep. 8, 1992
5074816 Multipurpose boat bucket Dec. 24, 1991
4973279 Appliance for assisting a swimmer swim, float and/or being towed behind a boat Nov. 27, 1990
4946412 Swimming aid Aug. 7, 1990
4925417 Underwater viewing paddle board May. 15, 1990
4897064 Head-fitting swimming apparatus Jan. 30, 1990
4895539 Underwater viewing device Jan. 23, 1990
4876756 Air mattress Oct. 31, 1989
4850914 Skim board Jul. 25, 1989
4844595 Viewing device for flotation body Jul. 4, 1989
4840592 Power driven underwater viewing platform Jun. 20, 1989
4803876 Sight glass for observing lubricant in the lower gearcase of marine engines Feb. 14, 1989
4757710 Sight glass for observing lubricant in the lower gearcase of marine engines Jul. 19, 1988
4723329 Air mattress Feb. 9, 1988
4715837 Underwater viewing device Dec. 29, 1987
4691658 Aquatic sport device Sep. 8, 1987
4553494 Aquatic camera Nov. 19, 1985
4553819 Visual aid apparatus for viewing objects beneath water surface Nov. 19, 1985
4465468 Underwater viewing device Aug. 14, 1984
4234977 Cot Nov. 25, 1980
4234978 Cot Nov. 25, 1980
4228751 Underwater viewing apparatus Oct. 21, 1980
4145783 Water window Mar. 27, 1979











 
 
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