US3436836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole measuring device
Assignee: Bendix Corp
•
Filing: 1966-04-26
•
Granted: 1969-04-08
•
Expires: 1986-04-26
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Metevia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/006; E21B47/00; E21B47/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899751A
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US2150070A
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US2724183A
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US2554171A
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US2865103A
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US2906026A
Cited
US3007134A
Cited
US3276131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |