US2528680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for filling, vacuumizing, and sealing containers
Assignee: FLEXIBLE VACUUM CONTAINER Corp
•
Filing: 1944-08-07
•
Granted: 1950-11-07
•
Expires: 1964-08-07
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Berch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/02; B65B31/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061384A
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US1270797A
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US1386887A
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US1825200A
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US1826926A
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US2064678A
Cited
US2281187A
Cited
US2241943A
Cited
US2277288A
Cited
US2292295A
Cited
US2380903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |