Invention Grant
- Patent Title: Double-acting door-check.
- Patent Title (中): 双作用门检查。
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Application No.: US1911659373Application Date: 1911-11-09
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Publication No.: US1070708APublication Date: 1913-08-19
- Inventor: MALONE LEVI D , HUBBS HENRY E
- Applicant: SHELBY SPRING HINGE COMPANY
- Assignee: Shelby Spring Hinge Company
- Current Assignee: Shelby Spring Hinge Company
- Priority: US1911659373 1911-11-09
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