U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 411/990 - Washer tongue-held


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Art collection under art collection 984 wherein the locking
No. of patents: 1
Last issue date: 11/24/1992


NumberTitleIssue Date
5165882Sealing mechanism for sealing an aperture on a closed vessel
A sealing mechanism for sealing an aperture formed through a housing of a closed vessel is disclosed. The sealing mechanism includes a bolt having a threaded shaft portion and a flange portion. A seating portion is formed on the outer opening of the apert... 		11/24/1992
 
Sign InRegister
Username  
Password   
forgot password?