US2444337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction absorbing device
Assignee: AMERICAN STEEL FOUNDRLES
•
Filing: 1944-03-16
•
Granted: 1948-06-29
•
Expires: 1964-03-16
Abstract
No abstract record available.
Inventors
- 👤 Robert B Cottrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/08; B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/12; B61F5/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1101993A
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GB378410A
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US1938715A
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US2141767A
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US2265392A
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US2295556A
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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) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |