Patent US3437149A successfully refreshed from Google Patents.
US3437149A
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Cable feed-through means and method for well head constructions
Assignee: Shaffer Tool Works
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Filing: 1967-05-31
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Granted: 1969-04-08
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Expires: 1987-05-31
Abstract
No abstract record available.
Inventors
- 👤 Edward T Cugini
- 👤 Wallace S Jeannerett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:09
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0407; E21B17/00; E21B17/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001946A
Cited
US2707030A
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US2760579A
Cited
US2931379A
Cited
US2991441A
Cited
US3290639A
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 |