US2807916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous external and internal centerless grinding machine
Assignee: Federal Mogul Bower Bearings Inc
•
Filing: 1954-04-12
•
Granted: 1957-10-01
•
Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 John R Squire
- 👤 Herman A Ortegren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:52
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/18; B24B5/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US530292A
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US1294024A
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US1743116A
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US1842375A
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US1841809A
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US2221827A
Cited
US2333411A
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US2478607A
Cited
US2646652A
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US2694883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |