Patent US2485940A successfully refreshed from Google Patents.
US2485940A
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US
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Assignee: Emsco Derrick and Equipment Co
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Filing: 1945-09-19
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Granted: 1949-10-25
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Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Guglielmo R Tremolada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:48
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0812; F16L27/0816
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2052603A
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US2049366A
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US2027653A
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US2147691A
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US2214261A
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US2394800A
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US2364383A
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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) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |