with at least two frames made from different materials

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Patents Grantslast 30 patents

Information Patent Grant
Removable sash window construction having releasable guide members
- Patent number 5,414,962
- Issue date May 16, 1995
- Chelsea Industries, Inc.
- John T. Forbis
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
3451168
- Patent number 3,451,168
- Issue date Jun 24, 1969
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
3402510
- Patent number 3,402,510
- Issue date Sep 24, 1968
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
3377747
- Patent number 3,377,747
- Issue date Apr 16, 1968
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
2664599
- Patent number 2,664,599
- Issue date Jan 5, 1954
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
2642935
- Patent number 2,642,935
- Issue date Jun 23, 1953
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
2626658
- Patent number 2,626,658
- Issue date Jan 27, 1953
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS