Invention Grant
- Patent Title: Gear tooth rounder
- Patent Title (中): 齿轮齿轮
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Application No.: US42759830Application Date: 1930-02-11
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Publication No.: US1923763APublication Date: 1933-08-22
- Inventor: TANNER HUBERT D
- Applicant: PRATT & WHITNEY CO
- Assignee: Pratt and Whitney
- Current Assignee: Pratt and Whitney
- Priority: US42759830 1930-02-11
- Main IPC: B23F19/10
- IPC: B23F19/10
Information query
