US2921748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Commercial Shearing Inc
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Filing: 1956-11-30
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Granted: 1960-01-19
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Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/667; B; B05; B05B; B05B1/00; B05B1/02; B05B1/04; B05B1/044; B05B1/06; B05B1/30; B05B1/32; B05B1/323; B21; B21B; B21B45/00; B21B45/04; B21B45/08
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |