Patent US3391948A successfully refreshed from Google Patents.
US3391948A
Expired / Lapsed
US
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Drawbar mechanism
Assignee: JOE F MCCOWN
•
Filing: 1966-08-26
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Granted: 1968-07-09
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Expires: 1986-08-26
Abstract
No abstract record available.
Inventors
- 👤 Joe F Mccown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:00
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962423A
Cited
GB435178A
Cited
US2686063A
Cited
US2600016A
Cited
US2653031A
Cited
US2818275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |