Patent US2575410A successfully refreshed from Google Patents.
US2575410A
Expired / Lapsed
US
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Mixing machine
Assignee: ECONOMY BUILDING BLOCK MACHINE
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Filing: 1950-01-20
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Granted: 1951-11-20
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Expires: 1970-01-20
Abstract
No abstract record available.
Inventors
- 👤 James A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:56
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/75; B01F27/755
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US940552A
Cited
DE325089C
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US1426118A
Cited
US1495841A
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US1959712A
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US2117175A
Cited
US2237787A
Cited
US2306422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |