US3076580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete aggregate feeder
Assignee: ENGINEERED EQUIPMENT Inc
•
Filing: 1960-02-12
•
Granted: 1963-02-05
•
Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
- 👤 Donald F Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:51
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/32; B01; B01F; B01F35/00; B01F35/71; B01F35/714; B01F35/7141; B01F35/71411; B01F35/714112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1777043A
Cited
US2151511A
Cited
US2314031A
Cited
US2299565A
Cited
US2680683A
Cited
US2985340A
Cited
US2907499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |