Patent US3456926A successfully refreshed from Google Patents.
US3456926A
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Concrete mixing machine
Assignee: Thomas Schmidt AS
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Filing: 1967-05-15
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Granted: 1969-07-22
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Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Gustav E Hummelshoj
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:32
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/46; B28C5/466; B01; B01F; B01F35/00; B01F35/90; B01F35/95; B28C5/08; B28C5/10; B28C5/12; B28C5/16; B28C5/163
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |