IP Library › Granted Patent US 4,499,820
Granted Patent Utility
US 4,499,820 · App. 06/489,035

Breather bag construction for a sealed storage structure

Inventor: Delmer R. Nelson
Patented Case View Patent ↗
Granted: Feb 19, 1985 Filed: Apr 27, 1983
Inventor
Delmer R. Nelson
Assignee (at issue)
A. O. Smith Harvestore Products, 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 4,499,820
App. No.
06/489,035
Filed
1983-04-27
Granted
1985-02-19
Kind
A