Patent US2998731A successfully refreshed from Google Patents.
US2998731A
Expired / Lapsed
US
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Pulley hubs
Assignee: ADAMSON STEPHENS Manufacturing CO
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Filing: 1959-05-19
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Granted: 1961-09-05
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Expires: 1979-05-19
Abstract
No abstract record available.
Inventors
- 👤 Elmer J Renner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7056; Y10T403/7058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US308639A
Cited
US733408A
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US827346A
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US1371828A
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US2524027A
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US2691541A
Cited
US2749157A
Cited
US2816452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |