US2547904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inner spring assembly
Assignee: Moore Co
•
Filing: 1944-09-28
•
Granted: 1951-04-03
•
Expires: 1964-09-28
Abstract
No abstract record available.
Inventors
- 👤 Charles J Elder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:57
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US902604A
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US1259022A
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US1899087A
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US1982941A
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US2017032A
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US2008185A
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US2029076A
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GB483849A
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US2291390A
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US2240051A
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US2231205A
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US2196526A
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US2217156A
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US2243210A
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US2257375A
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US2249999A
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US2320987A
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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 |