US3402601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension measuring device
Assignee: Schlumberger Technology Corp
•
Filing: 1965-10-28
•
Granted: 1968-09-24
•
Expires: 1985-10-28
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Heineman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:22
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/10; G01L5/103; E; E21; E21B; E21B47/00; E21B47/007; G01L1/00; G01L1/20; G01L1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR887695A
Cited
US3240057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |