US2655370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient cushion utilizing sideloaded helical springs
Assignee: United States Steel Corp
•
Filing: 1950-09-06
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Granted: 1953-10-13
•
Expires: 1970-09-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:00
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/06; F16F1/065; F16F15/00; F16F15/02; F16F15/04; F16F15/06; F16F15/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US814077A
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US2359036A
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US2570742A
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US2525730A
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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) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |