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Hemmings; David T. Patent Filings

Hemmings; David T.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hemmings; David T..The latest application filed is for "root-strength drill bit and method of making".

Company Profile
0.5.0
  • Hemmings; David T. - Orange CA
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Root-strength drill bit and method of making
Grant 5,353,552 - Hemmings October 11, 1
1994-10-11
Root-strength drill bit and method of making
Grant 5,184,926 - Hemmings February 9, 1
1993-02-09
Multi-carrier drill bit container
Grant 5,071,005 - Hemmings , et al. December 10, 1
1991-12-10
Drill bit carrying case
Grant 4,598,822 - Hemmings July 8, 1
1986-07-08
Composite drill for drilling circuit boards
Grant 4,135,847 - Hemmings January 23, 1
1979-01-23

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