Patent US2912105A successfully refreshed from Google Patents.
US2912105A
Expired / Lapsed
US
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Hardness testing and sorting
Assignee: Motors Liquidation Co
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Filing: 1954-05-28
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Granted: 1959-11-10
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Robert B Allured
- 👤 John L Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:56
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42; G01N2203/00; G01N2203/02; G01N2203/0202; G01N2203/0212
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |