Patent US2554038A successfully refreshed from Google Patents.
US2554038A
Expired / Lapsed
US
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Chain having rollers forming its conveying surface
Assignee: Jeffrey Manufacturing Co
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Filing: 1948-05-12
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Granted: 1951-05-22
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Expires: 1968-05-12
Abstract
No abstract record available.
Inventors
- 👤 Alexis W Lemmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/32; B65G17/34; B65G17/345; B65G2201/00; B65G2201/02; B65G2207/00; B65G2207/18
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) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |