US2821971A
Expired / Lapsed
US
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Arrangement for attenuating spring vibrations
Assignee: Kloeckner Humboldt Deutz AG
•
Filing: 1956-02-03
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Granted: 1958-02-04
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Expires: 1976-02-03
Abstract
No abstract record available.
Inventors
- 👤 Walter W Benz
- 👤 Bartholome Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:55
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/46; F01L1/462; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/12; F16F13/00; F16F13/02; F16F3/00; F16F3/02; F16F3/04; F16F7/00; F16F7/10; F16F7/104; F16F7/108; F16F7/116
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE268564C
Cited
US2178444A
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US2359915A
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US2562595A
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US2530034A
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US2559903A
Cited
US2650086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |