Patent US2612014A successfully refreshed from Google Patents.
US2612014A
Expired / Lapsed
US
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Back rest for grinding machines
Assignee: Brown and Sharpe Manufacturing Co
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Filing: 1949-08-27
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Granted: 1952-09-30
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Expires: 1969-08-27
Abstract
No abstract record available.
Inventors
- 👤 Maxwell I Mathewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:03
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/06; B24B41/065; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2593; Y10T82/2597
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |