Patent US2885830A successfully refreshed from Google Patents.
US2885830A
Expired / Lapsed
US
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Gear lapping machine
Assignee: Farrel Birmingham Co Inc
•
Filing: 1955-02-15
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Granted: 1959-05-12
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Expires: 1975-02-15
Abstract
No abstract record available.
Inventors
- 👤 Watt David Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:28
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/02; B23F19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1078570A
Cited
US1154830A
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US1960841A
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US1697823A
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US1966172A
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US2060803A
Cited
US2326368A
Cited
US2257989A
Cited
US2385129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |