IP Library Granted Patent US 3,985,334
Granted Patent Utility
US 3,985,334 · App. 05/590,048

Ball valve

Inventor: Frank F. Domyan
Patented Case View Patent ↗
Granted: Oct 12, 1976 Filed: Jun 25, 1975
Inventor
Frank F. Domyan
Assignee (at issue)
International Telephone and Telegraph Corporation

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 3,985,334
App. No.
05/590,048
Filed
1975-06-25
Granted
1976-10-12
Kind
A