Patent US2901092A successfully refreshed from Google Patents.
US2901092A
Expired / Lapsed
US
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Spring rollers or idlers for conveyor belts
Assignee: Jonas Woodhead and Sons Ltd
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Filing: 1954-09-09
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Granted: 1959-08-25
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Expires: 1974-09-09
Abstract
No abstract record available.
Inventors
- 👤 Harbottle John Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:50
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US857610A
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US1355587A
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US1804705A
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US2087813A
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US2157301A
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GB496987A
Cited
US2613802A
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US2647619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |