Chain door lock
Description
Claims
The ornamental design for a chain door lock, as shown and described.
Referenced Cited
U.S. Patent Documents
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D229163 | November 1973 | Bobrowski |
D229944 | January 1974 | Bobrowski |
3788107 | January 1974 | Lippman |
D233976 | December 1974 | Ridgway |
4105231 | August 8, 1978 | Huyssen |
4136898 | January 30, 1979 | Guenther |
4363227 | December 14, 1982 | Lo |
D286133 | October 14, 1986 | Dryburgh et al. |
4648641 | March 10, 1987 | Foster |
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D511958 | November 29, 2005 | Mastrogiovanni |
Patent History
Patent number: D553474
Type: Grant
Filed: May 2, 2006
Date of Patent: Oct 23, 2007
Inventor: Marco Mastrogiovanni (Seymour, CT)
Primary Examiner: Mitchell Siegel
Attorney: The Patent Source
Application Number: 29/259,084
Type: Grant
Filed: May 2, 2006
Date of Patent: Oct 23, 2007
Inventor: Marco Mastrogiovanni (Seymour, CT)
Primary Examiner: Mitchell Siegel
Attorney: The Patent Source
Application Number: 29/259,084
Classifications
Current U.S. Class:
D8/341