Patent US3371728A successfully refreshed from Google Patents.
US3371728A
Expired / Lapsed
US
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Kelly stabber
Assignee: Global Marine Inc
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Filing: 1965-10-18
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Granted: 1968-03-05
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Crooke Robert Curtis
- 👤 Mar Corona Del
- 👤 Coral L Cooper
- 👤 Koot Nick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:01
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2321245A
Cited
US2450934A
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US2606003A
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US2850929A
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US3063509A
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US3157283A
Cited
US3099323A
Cited
US3212593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |