US3485481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete conveyor
Assignee: Barber Greene Co
•
Filing: 1968-02-27
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Granted: 1969-12-23
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Expires: 1988-02-27
Abstract
No abstract record available.
Inventors
- 👤 Harold M Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:57
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023; F01; F01L; F01L25/00; F01L25/08; F04B9/00; F04B9/08; F04B9/10; F04B9/103; F04B9/105; F04B9/1056
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) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |