Patent US6176882B1 successfully refreshed from Google Patents.
US2644540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive transmission for steerable tractor wheels
Assignee: Individual
•
Filing: 1950-07-12
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Granted: 1953-07-07
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Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Abram P Balzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:00
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE180579C
Cited
US644610A
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US1191333A
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US1353192A
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US1282032A
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US2333611A
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US2421867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |