US3422912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of geoboring
Assignee: GEORGE D CAMP
•
Filing: 1967-03-20
•
Granted: 1969-01-21
•
Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 George D Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:32
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/08; E21B10/00; E21B10/02; E21B21/12; E21B25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1071199A
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US1935105A
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US1919844A
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US2341574A
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US2341572A
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US2314560A
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US2660402A
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US2893696A
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US3112799A
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US3086602A
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US3155179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |