IP Library Granted Patent US 4,228,705
Granted Patent Utility
US 4,228,705 · App. 06/034,445

Tool holding device

Inventor: Marvin M. Heisner
Patented Case View Patent ↗
Granted: Oct 21, 1980 Filed: Apr 30, 1979
Inventor
Marvin M. Heisner
Assignee (at issue)
Fansteel Inc.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

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Quick Facts
Patent No.
US 4,228,705
App. No.
06/034,445
Filed
1979-04-30
Granted
1980-10-21
Kind
A