US2942665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drillable packer
Assignee: Guiberson Corp
•
Filing: 1956-07-02
•
Granted: 1960-06-28
•
Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Roy C Davis
- 👤 Roland O Cox
- 👤 John J Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117535A
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US2187487A
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US2228503A
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US2598340A
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US2589506A
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US2681112A
Cited
US2600468A
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US2589337A
Cited
US2695064A
Cited
US2551240A
Cited
US2756827A
Cited
US2751018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |