Patent US2245654A successfully refreshed from Google Patents.
US2245654A
Expired / Lapsed
US
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Gear lapping and finishing machine
Assignee: Michigan Tool Co
•
Filing: 1935-08-24
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Granted: 1941-06-17
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Expires: 1955-08-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Drader
- 👤 John D Rovick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:51
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/02; B23F19/04; B23F23/00; B23F23/02; B23F23/04; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T29/477; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10477
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-06-16 | 1944-12-16 | 1945-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-16 | 1948-12-16 | 1949-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-16 | 1952-12-16 | 1953-06-17 | $7700.00 | Window Closed / Lapsed |