Leonard Arnold Duffy

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Hinesburg, VT, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for producing structures with multiple undercu...
- Patent number 8,480,943
- Issue date Jul 9, 2013
- Leonard Arnold Duffy
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Touch engageable fastener
- Patent number 8,375,529
- Issue date Feb 19, 2013
- Leonard Arnold Duffy
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Self-adhering device and method
- Patent number 7,950,114
- Issue date May 31, 2011
- Leonard Arnold Duffy
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Molded surface fasteners and attachment methods
- Patent number 7,254,874
- Issue date Aug 14, 2007
- Leonard Arnold Duffy
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Slidingly Engagable Fasteners and method
- Patent number 7,246,416
- Issue date Jul 24, 2007
- Leonard Arnold Duffy
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Folding cantilever support and method
- Patent number 7,124,988
- Issue date Oct 24, 2006
- Leonard Arnold Duffy
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Interlocking device
- Patent number 5,983,467
- Issue date Nov 16, 1999
- Leonard A. Duffy
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Self-Sealing Closure System and Method
- Publication number 20210267321
- Publication date Sep 2, 2021
- Leonard A. Duffy
- A44 - HABERDASHERY JEWELLERY
Information Patent Application
Self-adhering device and method
- Publication number 20080034560
- Publication date Feb 14, 2008
- Leonard Arnold Duffy
- A44 - HABERDASHERY JEWELLERY
Information Patent Application
Apparatus and method for producing structures with multiple undercu...
- Publication number 20080018025
- Publication date Jan 24, 2008
- Leonard Arnold Duffy
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Molded surface fasteners and attachment methods
- Publication number 20050198790
- Publication date Sep 15, 2005
- Leonard Arnold Duffy
- A44 - HABERDASHERY JEWELLERY
Information Patent Application
Slidingly engagable fasteners and method of manufacturing same
- Publication number 20030074771
- Publication date Apr 24, 2003
- Leonard Arnold Duffy
- A44 - HABERDASHERY JEWELLERY