US2583471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer drive
Assignee: Collis & Sons Ltd J
•
Filing: 1948-12-15
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Granted: 1952-01-22
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Expires: 1968-12-15
Abstract
No abstract record available.
Inventors
- 👤 Collis Leslie Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:35
CPC Classifications
B; B65; B65G; B65G37/00; B65G2812/00; B65G2812/01; B65G2812/011; B65H; B65H2403/00; B65H2403/10; B65H2404/00; B65H2404/20; B65H2404/26; B65H2404/269; B65H2404/2691
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) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |