US3015374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic derrick
Assignee: TEL E LECT PRODUCTS Inc
•
Filing: 1956-05-04
•
Granted: 1962-01-02
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Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Carbert
- 👤 Arne M Blomquist
- 👤 Raymond L Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:02
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/087; B; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1496466A
Cited
GB582030A
Cited
US2614802A
Cited
US2616666A
Cited
US2611580A
Cited
US2677147A
Cited
US2711803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |