IP Library Granted Patent US 4,584,727
Granted Patent Utility
US 4,584,727 · App. 06/623,089

Sofa bed spring improvements

Inventors: Bernard Reiss, Irl E. Ward
Patented Case View Patent ↗
Granted: Apr 29, 1986 Filed: Jun 21, 1984
Inventors
Bernard Reiss
Irl E. Ward
Assignee (at issue)
Sealy of Maryland and Virginia, Inc.

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 4,584,727
App. No.
06/623,089
Filed
1984-06-21
Granted
1986-04-29
Kind
A