Patent US2644728A successfully refreshed from Google Patents.
US2644728A
Expired / Lapsed
US
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Cantilever type bearing
Assignee: Singer Co
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Filing: 1948-04-24
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Granted: 1953-07-07
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Expires: 1968-04-24
Abstract
No abstract record available.
Inventors
- 👤 Ross D Ingalls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:05
CPC Classifications
F; F16; F16C; F16C35/00; H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US486175A
Cited
US669613A
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US1017132A
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US1715698A
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US1822859A
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GB505498A
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US2316693A
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US2306743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |