US2453678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical grinding machine
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1945-06-11
•
Granted: 1948-11-09
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Silven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:35
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; B24B47/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806664A
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US1911553A
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US2376236A
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US1048453A
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US1816750A
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US1961849A
Cited
US2163246A
Cited
US2205373A
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US2254002A
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US2335356A
Cited
US2294872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |