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US2658286A
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Helical vibratory conveyer
Assignee: Syntron Co
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Filing: 1949-08-31
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Granted: 1953-11-10
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Expires: 1969-08-31
Abstract
No abstract record available.
Inventors
- 👤 William V Spurlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:22
CPC Classifications
B; B65; B65G; B65G27/00; B65G2812/00; B65G2812/03; B65G2812/0384; B65G2812/0388; B65G2812/0392
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US973921A
Cited
US1611098A
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US1859450A
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US2044628A
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GB446488A
Cited
US2407357A
Cited
US2374664A
Cited
US2464216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |