US2670926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismograph cable handling device
Assignee: Standard Oil Development Co
•
Filing: 1951-08-09
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Granted: 1954-03-02
•
Expires: 1971-08-09
Abstract
No abstract record available.
Inventors
- 👤 Ben W Sewell
- 👤 John M Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:34
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/20; B; B65; B65H; B65H51/00; B65H51/02; B65H51/04; B65H51/08; B65H51/10; B66; B66D; B66D3/00; B66D3/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |