Patent US2412520A successfully refreshed from Google Patents.
US2006369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve for containers
Assignee: GEORGE B CORBETT
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Filing: 1933-06-19
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Granted: 1935-07-02
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Expires: 1953-06-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/24; B65D47/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-07-01 | 1938-12-31 | 1939-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-01 | 1942-12-31 | 1943-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-01 | 1946-12-31 | 1947-07-02 | $7700.00 | Window Closed / Lapsed |