US2547455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resiliently pivoted back rest
Assignee: Individual
•
Filing: 1944-08-12
•
Granted: 1951-04-03
•
Expires: 1964-08-12
Abstract
No abstract record available.
Inventors
- 👤 Roland J Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:56
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/448; A47C1/00; A47C1/02; A47C1/022; A47C1/023; A47C7/441; A47C7/443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US129510A
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US149552A
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US180147A
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US225432A
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US274375A
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US577594A
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US1816486A
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US669253A
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US673578A
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US740825A
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US755991A
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US758133A
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US899504A
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US909751A
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US1336510A
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US1361178A
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US1652165A
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US1731461A
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US1848338A
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US1849073A
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US1827627A
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US1909018A
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US2087253A
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US2312030A
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US2310346A
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US2365468A
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US2334193A
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US2306891A
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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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |