IP Library › Granted Patent US 5,281,996
Granted Patent Utility
US 5,281,996 · App. 07/940,537

Photolithographic reduction imaging of extended field

Inventors: John H. Bruning, David Beaulieu
Patented Case View Patent ↗
Granted: Jan 25, 1994 Filed: Sep 4, 1992
Inventors
John H. Bruning
David Beaulieu
Assignee (at issue)
Federal Signal 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 5,281,996
App. No.
07/940,537
Filed
1992-09-04
Granted
1994-01-25
Kind
A