IP Library Granted Patent US 4,155,487
Granted Patent Utility
US 4,155,487 · App. 05/831,713

Trigger sprayer

Inventor: William S. Blake
Patented Case View Patent ↗
Granted: May 22, 1979 Filed: Sep 9, 1977
Inventor
William S. Blake

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 4,155,487
App. No.
05/831,713
Filed
1977-09-09
Granted
1979-05-22
Kind
A