IP Library Granted Patent US 4,716,665
Granted Patent Utility
US 4,716,665 · App. 07/005,499

Folding trencher boom

Inventors: Richard Johnson, Stephen A. Youngers
Patented Case View Patent ↗
Granted: Jan 5, 1988 Filed: Jan 20, 1987
Inventors
Richard Johnson
Stephen A. Youngers
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 4,716,665
App. No.
07/005,499
Filed
1987-01-20
Granted
1988-01-05
Kind
A