Roger Anthony Purdon

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Cold Spring Harbor, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Curb ramp
- Patent number 9,021,643
- Issue date May 5, 2015
- Roger Anthony Purdon
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
CURB RAMP
- Publication number 20130133143
- Publication date May 30, 2013
- Roger Anthony Purdon
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL