IP Library Granted Patent US 4,396,363
Granted Patent Utility
US 4,396,363 · App. 06/301,862

Small reciprocating pump

Inventors: Hiroshi Sakamaki, Susumu Sugishita, Yukio Horikoshi
Patented Case View Patent ↗
Granted: Aug 2, 1983 Filed: Sep 14, 1981
Inventors
Hiroshi Sakamaki
Susumu Sugishita
Yukio Horikoshi
Assignee (at issue)
NIPPON PISTON RING CO., LTD.

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 4,396,363
App. No.
06/301,862
Filed
1981-09-14
Granted
1983-08-02
Kind
A