Harold Simpson

Person

Hazelcrest, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Self-contained security lock for double-hung window
- Patent number 4,923,230
- Issue date May 8, 1990
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Externally mounted latch for slidable sash window
- Patent number 4,901,475
- Issue date Feb 20, 1990
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Externally mounted latch for slidable sash window
- Patent number 4,837,975
- Issue date Jun 13, 1989
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Security lock for double-hung window
- Patent number 4,824,154
- Issue date Apr 25, 1989
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Latch for pivotal sash window
- Patent number 4,791,756
- Issue date Dec 20, 1988
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Latch and corner support for pivotal window sash
- Patent number 4,622,778
- Issue date Nov 18, 1986
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Combination pivot corner and slide guide for sash window
- Patent number 4,581,850
- Issue date Apr 15, 1986
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Corner locking and associated pivot means for extruded plastic sash...
- Patent number 4,578,903
- Issue date Apr 1, 1986
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Latch for pivotal sash window
- Patent number 4,553,353
- Issue date Nov 19, 1985
- Ashland Products Company
- Harold Simpson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Harold Simpson

Person

Patents Grantslast 30 patents

Self-contained security lock for double-hung window

Externally mounted latch for slidable sash window

Externally mounted latch for slidable sash window

Security lock for double-hung window

Latch for pivotal sash window

Latch and corner support for pivotal window sash

Combination pivot corner and slide guide for sash window

Corner locking and associated pivot means for extruded plastic sash...

Latch for pivotal sash window