US2969702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for running thread-jointed oil well strings into and out of oil wells
Assignee: O & M Machine Co Inc
•
Filing: 1955-05-19
•
Granted: 1961-01-31
•
Expires: 1975-05-19
Abstract
No abstract record available.
Inventors
- 👤 Harry E Cornish
- 👤 Charles G Graef
- 👤 Harold F Groebe
- 👤 Edward H Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:44
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16
Claims Analysis
Total Claims: 0
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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) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |