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US2724754A
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US
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Perforated arc chute barrier with arc constricting slot
Assignee: Allis Chalmers Corp
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Filing: 1951-02-03
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Granted: 1955-11-22
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Expires: 1971-02-03
Abstract
No abstract record available.
Inventors
- 👤 Julius W Timmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:38
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1840292A
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US1868442A
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US2140360A
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US2147430A
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US2244061A
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US2442199A
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US2468422A
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GB615025A
Cited
US2616006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |