Invention Grant
- Patent Title: Mechanism for operating and securing windows.
- Patent Title (中): 操作和安全WINDOWS的机制。
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Application No.: US1905273880Application Date: 1905-08-12
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Publication No.: US823195APublication Date: 1906-06-12
- Inventor: SPERRY EVELYN P
- Applicant: SPERRY EVELYN P
- Assignee: Evelyn P Sperry
- Current Assignee: Evelyn P Sperry
- Priority: US1905273880 1905-08-12
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