US2651149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for grinding disks
Assignee: Crucible Steel Company of America
•
Filing: 1950-05-10
•
Granted: 1953-09-08
•
Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 John F Ferm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:20
CPC Classifications
B; B24; B24B; B24B9/00; B24B3/00; B24B3/36; B24B3/46; B24B3/466; B24B47/00; B24B47/02; B24B47/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US723051A
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US789700A
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US1455286A
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US1877572A
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US1967447A
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US2045778A
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US2113367A
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US2183490A
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US2354347A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |