Charles W. Duncan

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Costa Mesa, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Shock absorber for safety cable system
- Patent number 5,332,071
- Issue date Jul 26, 1994
- SINCO Incorporated
- Charles W. Duncan
- E04 - BUILDING
Information Patent Grant
Safety net support system
- Patent number 5,299,654
- Issue date Apr 5, 1994
- SINCO Incorporated
- Charles W. Duncan
- E04 - BUILDING
Information Patent Grant
Retractable pallet rack guard
- Patent number 5,170,829
- Issue date Dec 15, 1992
- SINCO Incorporated
- Charles W. Duncan
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Debris net/scaffolding frame lifting system
- Patent number 4,962,828
- Issue date Oct 16, 1990
- Charles W. Duncan
- E04 - BUILDING
Information Patent Grant
Perimeter debris net lifting system
- Patent number 4,892,169
- Issue date Jan 9, 1990
- Sinco, Inc.
- Charles W. Duncan
- E04 - BUILDING