Patent US2994518A successfully refreshed from Google Patents.
US2994518A
Expired / Lapsed
US
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Conveyor driving system
Assignee: Holcroft and Co
•
Filing: 1958-12-10
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Granted: 1961-08-01
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Expires: 1978-12-10
Abstract
No abstract record available.
Inventors
- 👤 Roland C Crans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:58
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/243
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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |