US2489885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging hopper for truck mixers
Assignee: Worthington Pump and Machinery Corp
•
Filing: 1947-06-04
•
Granted: 1949-11-29
•
Expires: 1967-06-04
Abstract
No abstract record available.
Inventors
- 👤 Robert M Henderson
- 👤 Eyck John C Ten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4234; B28C5/4237
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2105873A
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US2265751A
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US2223307A
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US2360345A
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US2350285A
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US2374912A
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US2451555A
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US2398549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |