IP Library Granted Patent US 4,448,262
Granted Patent Utility
US 4,448,262 · App. 06/379,772

Pneumatic hammer

Inventor: Robert R. Vincent
Patented Case View Patent ↗
Granted: May 15, 1984 Filed: May 19, 1982
Inventor
Robert R. Vincent
Assignee (at issue)
Cooper Industries Holdings

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,448,262
App. No.
06/379,772
Filed
1982-05-19
Granted
1984-05-15
Kind
A