Patent US2658731A successfully refreshed from Google Patents.
US2658731A
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Recording device for concrete mixing drums
Assignee: HOWARD S OSBORNE
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Filing: 1952-02-05
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Granted: 1953-11-10
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Expires: 1972-02-05
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Osborne
- 👤 Robert O Boykin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:28
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/02; B28C7/028; B28C5/00; B28C5/42; B28C5/4203; B28C5/4206; B28C5/422; G; G07; G07C; G07C3/00; G07C3/08; G07C3/12
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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |