IP Library › Granted Patent US 4,131,780
Granted Patent Utility
US 4,131,780 · App. 05/850,750

Underwater cutting and gouging torch

Inventors: Harold J. Trabbold, Jerry R. Hummel
Patented Case View Patent ↗
Granted: Dec 26, 1978 Filed: Nov 11, 1977
Inventors
Harold J. Trabbold
Jerry R. Hummel
Assignee (at issue)
Air Products and Chemicals, 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 4,131,780
App. No.
05/850,750
Filed
1977-11-11
Granted
1978-12-26
Kind
A