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Class Information
Number: 138/89.4
Name: Pipes and tubular conduits > With closures and plugs > Inflation stem type > Dust cap
Description: Closures for pipes of the inflation stem type comprising dust caps.










Patents under this class:

Patent Number Title Of Patent Date Issued
7610937 Self-sealing regulator fill port protective/dust cover Nov. 3, 2009
7328723 Pipe nipple protective sleeve Feb. 12, 2008
6874541 Temporary duct cover Apr. 5, 2005
6612329 Locking valve stem and cap apparatus Sep. 2, 2003
6508274 Fitting dust plug Jan. 21, 2003
6170529 Knock-off plug for plastic pipe Jan. 9, 2001
6032697 Cover for standpipes Mar. 7, 2000
5876282 Weather cap Mar. 2, 1999
5778934 Debris cap Jul. 14, 1998
5687773 Exhaust pipe cover and method of covering an exhaust pipe Nov. 18, 1997
5417247 Bleed screw cap for hydraulic equipment May. 23, 1995
5337792 Protective cover for pipe end Aug. 16, 1994
4932446 Coaxial pressure fill fitting and standpipe drain Jun. 12, 1990
4902043 Fluid coupling and seal assembly Feb. 20, 1990
4793395 Tire shock absorber Dec. 27, 1988
4487241 Pumping and tire deflation warning system Dec. 11, 1984
4483371 Protective holder for hose tip assembly Nov. 20, 1984
4481977 Dust cap for fluid coupling Nov. 13, 1984
4356836 Tubeless tire valve stem and cover Nov. 2, 1982
4337814 Air valve conduit in the track wall of a tire Jul. 6, 1982
4300597 Dust cover assembly for quick disconnect coupling Nov. 17, 1981











 
 
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