US2918161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor system
Assignee: STRUCTURAL CLAY PRODUCTS RES F
•
Filing: 1957-06-19
•
Granted: 1959-12-22
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Harvey A Edmonds
- 👤 Clifford E Evanson
- 👤 William S Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:36
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/52; B65G47/68; B65G47/681; B65B; B65B27/00; B65B27/02; B65B35/00; B65B35/30; B65B35/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1430766A
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US1929204A
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US2121135A
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US2838161A
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US2773583A
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US2801728A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |