Patent US1683388A successfully refreshed from Google Patents.
US2501422A
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US
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Abrasive block or segment
Assignee: Individual
•
Filing: 1949-06-01
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Granted: 1950-03-21
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Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 Titcomb Albert Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:07
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/06; B24D7/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US797427A
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US848760A
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CH52589A
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US1027536A
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US1767321A
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US1868492A
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US2082404A
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US2235446A
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US2307632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |