US2939450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure device
Assignee: Individual
•
Filing: 1955-06-29
•
Granted: 1960-06-07
•
Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Rubens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191; F24B1/192
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1485200A
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US756524A
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US772918A
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US801374A
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US836239A
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US1146673A
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US1565938A
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FR642506A
Cited
US1906677A
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US2597539A
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FR1056161A
Cited
FR1086186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |