Patent US2507079A successfully refreshed from Google Patents.
US2507079A
Expired / Lapsed
US
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Abrading mechanism
Assignee: Individual
•
Filing: 1946-06-19
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Granted: 1950-05-09
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Expires: 1966-06-19
Abstract
No abstract record available.
Inventors
- 👤 Charles H Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:58
CPC Classifications
F; F01; F01D; F01D21/00; F01D21/04; F01D11/00; F01D11/08; F01D11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE501662C
Cited
US941395A
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US899319A
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US1335002A
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US1424242A
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US1583587A
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US1820725A
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US1757175A
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US2280835A
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US2207433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |