IP Library Granted Patent US 4,740,218
Granted Patent Utility
US 4,740,218 · App. 06/873,721

Blast cleaning machine and conveyor therefor

Inventors: James C. Hensley, A. Lee Bussard, Jr.
Patented Case View Patent ↗
Granted: Apr 26, 1988 Filed: Jun 12, 1986
Inventors
James C. Hensley
A. Lee Bussard, Jr.

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 4,740,218
App. No.
06/873,721
Filed
1986-06-12
Granted
1988-04-26
Kind
A