Richard C. BLASKA

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San Francisco, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Retractable ladder
- Patent number 8,944,211
- Issue date Feb 3, 2015
- Richard C. Blaska
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
RETRACTABLE LADDER
- Publication number 20120222915
- Publication date Sep 6, 2012
- Richard C. BLASKA
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS