Patent US2677080A successfully refreshed from Google Patents.
US2677080A
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Strip tensioning system responsive to two fluid pressures
Assignee: Allis Chalmers Corp
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Filing: 1949-09-17
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Granted: 1954-04-27
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Expires: 1969-09-17
Abstract
No abstract record available.
Inventors
- 👤 Allan C Halter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:35
CPC Classifications
G; G05; G05D; G05D15/00; G05D15/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR425399A
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US2105824A
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US2300990A
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US2365896A
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US2325381A
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US2342767A
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US2348695A
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US2508153A
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US2590666A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |