Invention Grant
- Patent Title: Coin-controlled indicating mechanism.
- Patent Title (中): 控制指示机制。
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Application No.: US1900020439Application Date: 1900-06-15
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Publication No.: US672027APublication Date: 1901-04-16
- Inventor: ADAMS GEORGE W
- Applicant: ADAMS GEORGE W
- Assignee: George W Adams
- Current Assignee: George W Adams
- Priority: US1900020439 1900-06-15
Information query
