Patent US2662580A successfully refreshed from Google Patents.
US2662580A
Expired / Lapsed
US
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Rocker attachment unit for chairs
Assignee: Individual
•
Filing: 1950-04-27
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Granted: 1953-12-15
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Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Gottfried Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:18
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US91458A
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US207846A
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US1198386A
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US1297718A
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US1231151A
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US1791453A
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US2516773A
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US2516774A
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US2593962A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |