Patent US3465840A successfully refreshed from Google Patents.
US3465840A
Expired / Lapsed
US
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Gyro stabilized center tracking vehicle
Assignee: THOMAS O SUMMERS
•
Filing: 1967-03-14
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Granted: 1969-09-09
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Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas O Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
B; B62; B62D; B62D37/00; B62D37/04; B62D37/06; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1513143A
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US1992086A
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US3145797A
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US3236323A
Cited
US3277840A
Cited
US3373832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |