Patent US2507349A successfully refreshed from Google Patents.
US2507349A
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US
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Mixing and aerating machine
Assignee: JOHN BERGUM
•
Filing: 1948-10-28
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Granted: 1950-05-09
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Expires: 1968-10-28
Abstract
No abstract record available.
Inventors
- 👤 John A Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:06
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/1825; B28C5/1856; B28C5/1862; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/118; B28C5/38; B28C5/381; B28C5/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |