US2650673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent and filter plug closure
Assignee: Individual
•
Filing: 1950-03-29
•
Granted: 1953-09-01
•
Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Horace L Bering
- 👤 Thomas P Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:50
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/24; B65D51/28; B65D51/16; B65D51/1605; B65D51/1616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1190654A
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US1180811A
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US1683338A
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US1940601A
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US2061958A
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US2394333A
Cited
US2298938A
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US2368428A
Cited
US2316497A
Cited
US2323146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |