IP Library › Granted Patent US 4,172,355
Granted Patent Utility
US 4,172,355 · App. 05/922,714

Upper apron assembly

Inventor: Allison W. Blanshine
Patented Case View Patent ↗
Granted: Oct 30, 1979 Filed: Jul 7, 1978
Inventor
Allison W. Blanshine
Assignee (at issue)
Sperry Rand 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 4,172,355
App. No.
05/922,714
Filed
1978-07-07
Granted
1979-10-30
Kind
A