US2447712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioning device
Assignee: JAMES M W CHAMBERLAIN
•
Filing: 1944-11-18
•
Granted: 1948-08-24
•
Expires: 1964-11-18
Abstract
No abstract record available.
Inventors
- 👤 Tracy D Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/373
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1732648A
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US1929201A
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US1977896A
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US2079798A
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US2037033A
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US2041353A
Cited
US2115713A
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FR847039A
Cited
US2232667A
Cited
US2365842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |