US3419260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear resistant leaf spring
Assignee: Boeing North American Inc
•
Filing: 1967-06-05
•
Granted: 1968-12-31
•
Expires: 1987-06-05
Abstract
No abstract record available.
Inventors
- 👤 Louis J Hrusovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:35
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/18; F16F2226/00; F16F2226/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2831788A
Cited
US2294161A
Cited
US2935433A
Cited
US3240639A
Cited
US3173668A
Cited
US3233915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |