Door opening and closing mechanism.

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US1085657A Door opening and closing mechanism. 失效

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Patent Title: Door opening and closing mechanism.
Application No.: US1913768120

Application Date: 1913-05-16
Publication No.: US1085657A

Publication Date: 1914-02-03
Inventor: APPLETON BURM S
Applicant: APPLETON BURM S
Assignee: Burm S Appleton
Current Assignee: Burm S Appleton
Priority: US1913768120 1913-05-16

Door opening and closing mechanism.

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