Invention Grant
- Patent Title: Ladders
- Patent Title (中): 梯子
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Application No.: US21826162Application Date: 1962-08-21
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Publication No.: US3085649APublication Date: 1963-04-16
- Inventor: GILLMAN EDWARD T
- Applicant: PUTNAM ROLLING LADDER CO INC
- Assignee: Putnam Rolling Ladder Co Inc
- Current Assignee: Putnam Rolling Ladder Co Inc
- Priority: US21826162 1962-08-21
- Main IPC: E06C7/08
- IPC: E06C7/08
Information query
