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

...In 1790, the cost to obtain a patent was between $4 and $5.

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.

Assignee: Birmingham Bolt Co., Inc.

Location: Birmingham, AL
No. of patents: 1

Number	Title	Issue Date
5352066	Mine roof/bolt anchor assembly and method of installation thereof The present invention is directed to an anchor assembly for installing a threaded mine-roof bolt under tension in a bore hole formed in underground passageways, mines, and the like. The anchor assembly includes a two compartment resin cartridge and a mech...	10/04/1994