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Patent US2880891A successfully refreshed from Google Patents.
US2880891A
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US
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Conveyer control system
Assignee: SPX Technologies Inc
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Filing: 1956-12-31
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Granted: 1959-04-07
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 John E Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:38
CPC Classifications
B; B65; B65G; B65G43/00; B65G43/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA455637A
Cited
US1800898A
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US2076955A
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US2304447A
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US2298829A
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US2494435A
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US2714355A
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US2470922A
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US2700728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |