IP Library › Granted Patent US 4,824,154
Granted Patent Utility
US 4,824,154 · App. 07/154,656

Security lock for double-hung window

Inventor: Harold Simpson
Patented Case View Patent ↗
Granted: Apr 25, 1989 Filed: Feb 10, 1988
Inventor
Harold Simpson
Assignee (at issue)
Ashland Products, Inc.

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Quick Facts
Patent No.
US 4,824,154
App. No.
07/154,656
Filed
1988-02-10
Granted
1989-04-25
Kind
A