US2555898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operating and braking system for circuit interrupters
Assignee: Allis Chalmers Corp
•
Filing: 1949-01-28
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Granted: 1951-06-05
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Expires: 1969-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ira W Paterson
- 👤 John F Chipman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:58
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248593A
Cited
US2320763A
Cited
US2316944A
Cited
US2420441A
Cited
US2430128A
Cited
US2437086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |