US1800880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resisting device for wire-conveyer belts
Assignee: WICKWIRE SPENCER STEEL Co
•
Filing: 1929-04-12
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Granted: 1931-04-14
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Expires: 1949-04-12
Abstract
No abstract record available.
Inventors
- 👤 Francis N Woodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:04
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/54; B65G2201/00; B65G2201/06; B65G2812/00; B65G2812/02; B65G2812/02267; B65G2812/02277; B65G2812/02326; B65G2812/02376; B65G2812/02386
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-04-13 | 1934-10-13 | 1935-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-13 | 1938-10-13 | 1939-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-13 | 1942-10-13 | 1943-04-14 | $7700.00 | Window Closed / Lapsed |