IP Library Granted Patent US 4,767,255
Granted Patent Utility
US 4,767,255 · App. 07/101,719

Backhoe boom cylinder bleed circuit

Inventors: Roger D. Mickelson, Thomas R. Brown
Patented Case View Patent ↗
Granted: Aug 30, 1988 Filed: Sep 28, 1987
Inventors
Roger D. Mickelson
Thomas R. Brown
Assignee (at issue)
J. I. Case Company

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 4,767,255
App. No.
07/101,719
Filed
1987-09-28
Granted
1988-08-30
Kind
A