US3369090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual braking system safety device
Assignee: Weatherhead Co
•
Filing: 1966-06-28
•
Granted: 1968-02-13
•
Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 John A Turchan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:54
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/38; B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2764176A
Cited
US3228194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |