IP Library Granted Patent US 5,235,352
Granted Patent Utility
US 5,235,352 · App. 07/748,220

High density ink jet printhead

Inventors: John R. Pies, David B. Wallace, Donald J. Hayes
Patented Case View Patent ↗
Granted: Aug 10, 1993 Filed: Aug 16, 1991
Inventors
John R. Pies
David B. Wallace
Donald J. Hayes
Assignee (at issue)
Compaq Computer 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 5,235,352
App. No.
07/748,220
Filed
1991-08-16
Granted
1993-08-10
Kind
A