US3246191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron generating discharge tube
Assignee: Schlumberger Well Surveying Corp
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Filing: 1961-03-23
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Granted: 1966-04-12
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Expires: 1981-03-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Frentrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:39
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A GASEOUS DISCHARGE DEVICE COMPRISING AN ENVELOPE CONTAINING AN IONIZABLE GAS AND HAVING OPPOSITELY DISPOSED OPENINGS; A PAIR OF ELECTRICALLY-CONDUCTIVE MAGNET MEMBERS EACH RECEIVED BY ONE OF SAID OPENINGS AND HAVING CONFRONTING SURFACES DEFINING CATHODE ELECTRODES FOR SAID DEVICE, SAID MAGNET MEMBERS BEING DISPOSED IN MAGNETIC AIDING RELATIONSHIP TO PROVIDE A MAGNETIC FIELD TRANSVERSE TO SAID SURFACES; MEANS FOR MAINTAINING A GAS-TIGHT RELATIONSHIP BETWEEN SAID MAGNET MEMBERS AND SAID OPENINGS;
Claim 2
Dependent Claim
70 words
A GASEOUS DISCHARGE DEVICE COMPRISING AN ENVELOPE CONTAINING AN IONIZABLE GAS AND HAVING OPPOSITELY DISPOSED OPENINGS; A PAIR OF ELECTRICALLY-CONDUCTIVE MAGNET MEMBERS EACH RECEIVED BY ONE OF SAID OPENINGS AND HAVING CONFRONTING SURFACES DEFINING CATHODE ELECTRODES FOR SAID DEVICE, SAID MAGNET MEMBERS BEING DISPOSED IN MAGNETIC AIDING RELATIONSHIP TO PROVIDE A MAGNETIC FIELD TRANSVERSE TO SAID SURFACES; MEANS FOR MAINTAINING A GAS-TIGHT RELATIONSHIP BETWEEN SAID MAGNET MEMBERS AND SAID OPENINGS;
References Cited (Backward Citations)
US1092489A
Cited
US1953813A
Cited
US2769096A
Cited
US2908823A
Cited
US3020408A
Cited
FR1202728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |