US2766831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective cross-over packer
Assignee: CONTINENTAL ASSURANCE Co
•
Filing: 1950-03-06
•
Granted: 1956-10-16
•
Expires: 1970-03-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Otis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:08
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/14; E21B23/00; E21B23/06; E21B33/00; E21B33/10; E21B33/12; E21B33/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2307983A
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US2404876A
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US2433942A
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US2531258A
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US2467860A
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US2571478A
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US2649916A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |