Patent US3217898A successfully refreshed from Google Patents.
US3217898A
Expired / Lapsed
US
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Railway hydraulic cushion assembly
Assignee: Pullman Standard Inc
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Filing: 1964-02-21
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Granted: 1965-11-16
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Expires: 1984-02-21
Abstract
No abstract record available.
Inventors
- 👤 Arnold L Stretch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:25
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/3207; F16F9/48; F16F9/486; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/974; Y10S411/984; Y10S411/987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |