IP Library › Granted Patent US 4,499,968
Granted Patent Utility
US 4,499,968 · App. 06/302,777

Bore lubricator

Inventor: Harry L. Zimmerly
Patented Case View Patent ↗
Granted: Feb 19, 1985 Filed: Sep 16, 1981
Inventor
Harry L. Zimmerly
Assignee (at issue)
Halkey-Roberts 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 4,499,968
App. No.
06/302,777
Filed
1981-09-16
Granted
1985-02-19
Kind
A