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US2900178A
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US
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Paving breaker steel
Assignee: Ingersoll Rand Co
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Filing: 1958-03-10
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Granted: 1959-08-18
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Harrison Henry
- 👤 Henry C Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:29
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/36; B; B25; B25D; B25D17/00; B25D17/02; B25D2222/00; B25D2222/21; B25D2222/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US560500A
Cited
US1174433A
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US1570650A
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US1591377A
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US2629588A
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US2721068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |