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US3264994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsurface well apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1963-07-22
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Granted: 1966-08-09
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Leutwyler Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:46
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B47/00; E21B47/12; E21B47/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
IN SUBSURFACE WELL APPARATUS ADAPTED TO BE LOWERED IN A WELL BORE, MEANS INCORPORATED IN THE APPARATUS FOR OPERATING THE APPARATUS COMPRISING THE COMBINATION OF DETECTING MEANS INCLUDING AN INDUCTIVE COIL OPERABLE IN RESPONSIVE TO AN APPLIED MAGNETIC FIELD SIGNAL FOR PROVIDING AN OUTPUT SIDNAL; STATICIZING MEANS CONNECTED TO SAID DETECTING MEANS AND OPERABLE IN RESPONSE TO SAID OUTPUT SIGNAL TO PROVIDE AND OPERATING SIGNAL HAVING A MAGNITUDE AND DURATION GREATER THAN THAT OF SAID OUTPUT SIGNAL; AND POWERING MEANS, INCLUDING A SOURCE OF WORK ENERGY FOR OPERATING THE APPARATUS, CONNECTED TO SAID STATICIZING MEANS AND OPERABLE IN RESPONSE TO SAID OPERATING SIGNALS FOR APPLYING WORK ENERGY TO THE APPARATUS, WHEREBY AN APPLIED MAGNETIC FIELD SIGNAL TRIGGERS THE APPARATUS INTO OPERATION.
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |