Patent US3467224A successfully refreshed from Google Patents.
US3467224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable safety clamping device for oil wells and the like
Assignee: CONTRACTORS SERVICES Inc
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Filing: 1968-03-05
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Granted: 1969-09-16
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Expires: 1988-03-05
Abstract
No abstract record available.
Inventors
- 👤 William L Curtis
- 👤 Billy Dean Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:34
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/12; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3996; Y10T24/44; Y10T24/44291; Y10T24/44299; Y10T24/44308
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |