IP Library › Granted Patent US 4,752,212
Granted Patent Utility
US 4,752,212 · App. 06/943,000

Recuperative burners

Inventor: Robert J. Breen
Patented Case View Patent ↗
Granted: Jun 21, 1988 Filed: Dec 18, 1986
Inventor
Robert J. Breen
Assignee (at issue)
BRITISH GAS PLC

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 4,752,212
App. No.
06/943,000
Filed
1986-12-18
Granted
1988-06-21
Kind
A