Patent US2657775A successfully refreshed from Google Patents.
US2657775A
Expired / Lapsed
US
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Bead construction
Assignee: Aurora Equipment Co
•
Filing: 1948-05-01
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Granted: 1953-11-03
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Expires: 1968-05-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Dunham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:04
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US391821A
Cited
US410856A
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US934810A
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US866479A
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US993127A
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US1669690A
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US1811262A
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US2101777A
Cited
US2220826A
Cited
US2192720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |