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

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

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Examiner: Sarma, Rohini

Primary examiner statistics: 0 patents; average approval time: N/A
Assistant examiner statistics: 3 patents; average approval time: 491 days

Patent No.

Patent Title:

No patents.

Patent No.	Patent Title:
4752223	Sheath assembly for dental handpiece
4741697	Chairside filter/dryer for dental air syringe
4738619	Methods and apparatus for selecting a dental anchor