IP Library › Granted Patent US 5,248,174
Granted Patent Utility
US 5,248,174 · App. 07/975,071

Security lock for sash window

Inventors: Dennis A. Matz, Steven E. Schultz
Patented Case View Patent ↗
Granted: Sep 28, 1993 Filed: Nov 20, 1992
Inventors
Dennis A. Matz
Steven E. Schultz
Assignee (at issue)
Ashland Products, 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 5,248,174
App. No.
07/975,071
Filed
1992-11-20
Granted
1993-09-28
Kind
A