US3481223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutoff device
Assignee: DOUGLAS A FRASER
•
Filing: 1968-05-22
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Granted: 1969-12-02
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Expires: 1988-05-22
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:52
CPC Classifications
B; B60; B60W; B60W30/00; B60W30/18; B60W10/00; B60W10/04; B60W10/06; B60W10/10; F; F16; F16H; F16H59/00; F16H59/02; F16H59/0217; F16H63/00; F16H63/02; F16H63/08; F16H63/16; F16H63/18; F16H63/40; F16H63/50; F16H63/502
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) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |