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Patent US2729443A successfully refreshed from Google Patents.
US2729443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber springs
Assignee: Individual
•
Filing: 1954-09-10
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Granted: 1956-01-03
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Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 Clarence C Olinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:29
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/40; F16F1/406; F16F3/00; F16F3/08; F16F3/087; F16F3/0873; F16F3/0876; F16F2226/00; F16F2226/04; F16F2226/044
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |