Patent US2780386A successfully refreshed from Google Patents.
US2780386A
Expired / Lapsed
US
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Frozen seal receptacle
Assignee: Individual
•
Filing: 1950-07-10
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Granted: 1957-02-05
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Expires: 1970-07-10
Abstract
No abstract record available.
Inventors
- 👤 Charles S Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0214; B65D43/0222; B65D53/00; B65D53/06; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/0012; B65D2543/00175; B65D2543/00194; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537; B65D2543/00953; B65D2543/00962; B65D2543/0099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US245026A
Cited
US313463A
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US584660A
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US586636A
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US1680060A
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US643230A
Cited
US1459437A
Cited
US1621257A
Cited
US1559013A
Cited
US2550815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |