IP Library › Granted Patent US 4,127,398
Granted Patent Utility
US 4,127,398 · App. 04/482,327

Multiple-channel tubular devices

Inventor: Joseph Singer, Jr.
Patented Case View Patent ↗
Granted: Nov 28, 1978 Filed: Aug 20, 1965
Inventor
Joseph Singer, Jr.
Assignee (at issue)
Nitec,LLC

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 4,127,398
App. No.
04/482,327
Filed
1965-08-20
Granted
1978-11-28
Kind
A