IP Library Granted Patent US 4,771,878
Granted Patent Utility
US 4,771,878 · App. 06/522,946

Pusher cylinder

Inventors: David Braithwaite, Richard Walker, Daniel W. Wartschow
Patented Case View Patent ↗
Granted: Sep 20, 1988 Filed: Aug 12, 1983
Inventors
David Braithwaite
Richard Walker
Daniel W. Wartschow
Assignee (at issue)
Emhart Industries, Inc.

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 4,771,878
App. No.
06/522,946
Filed
1983-08-12
Granted
1988-09-20
Kind
A