IP Library › Granted Patent US 4,932,167
Granted Patent Utility
US 4,932,167 · App. 07/260,274

Surface cleaner

Inventor: James H. Carpenter
Patented Case View Patent ↗
Granted: Jun 12, 1990 Filed: Oct 20, 1988
Inventor
James H. Carpenter
Assignee (at issue)
Pangborn 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.

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 4,932,167
App. No.
07/260,274
Filed
1988-10-20
Granted
1990-06-12
Kind
A