US2980439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient suspension system and stress absorbing units therefor
Assignee: HENDRICKSON Manufacturing CO
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Filing: 1958-07-17
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Granted: 1961-04-18
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Expires: 1978-07-17
Abstract
No abstract record available.
Inventors
- 👤 Miller R Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:11
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/3807; F16F1/3814; B; B60; B60G; B60G11/00; B60G11/22; B60G5/00; B60G5/04
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |