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US2736457A
Expired / Lapsed
US
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Spring loaded sealing means
Assignee: Individual
•
Filing: 1954-12-10
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Granted: 1956-02-28
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Expires: 1974-12-10
Abstract
No abstract record available.
Inventors
- 👤 Hurley Charles Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
B; B65; B65D; B65D45/00; B65D45/02; B65D45/30; B65D2543/00; B65D2543/00009; B65D2543/00953; B65D2543/00962; B65D2543/00972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1486064A
Cited
FR638134A
Cited
DE663950C
Cited
FR904232A
Cited
US2607383A
Cited
US2643790A
Cited
US2602565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |