Patent US2467638A successfully refreshed from Google Patents.
US2467638A
Expired / Lapsed
US
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Convertible seat structure
Assignee: Individual
•
Filing: 1944-07-29
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Granted: 1949-04-19
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Expires: 1964-07-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:59
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/036; A47C1/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US663582A
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US711412A
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US788656A
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US1200909A
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US1369834A
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US1349227A
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US2011870A
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US2240204A
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US2213590A
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US2187713A
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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) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |