Patent US2869662A successfully refreshed from Google Patents.
US2869662A
Expired / Lapsed
US
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Detachable wheel assembly drive unit
Assignee: Individual
•
Filing: 1956-02-14
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Granted: 1959-01-20
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Expires: 1976-02-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Koup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:30
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/50; B64C25/405; Y; Y02; Y02T; Y02T50/00; Y02T50/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1514872A
Cited
FR600857A
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US1041010A
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US2126255A
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US2065598A
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US2257108A
Cited
US2381842A
Cited
CH242777A
Cited
US2446242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |