Patent US2687766A successfully refreshed from Google Patents.
US2687766A
Expired / Lapsed
US
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Convertible chair
Assignee: Individual
•
Filing: 1949-01-27
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Granted: 1954-08-31
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Expires: 1969-01-27
Abstract
No abstract record available.
Inventors
- 👤 John K Prassas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:44
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/163; A47C1/00; A47C1/02; A47C1/031; A47C1/036; A47C1/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US9449A
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US366741A
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US2374848A
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US667363A
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US945928A
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US1751599A
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US2182598A
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US2281085A
Cited
US2288775A
Cited
US2464370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |