US2819909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide wheel front end conversion for tractors
Assignee: Individual
•
Filing: 1955-01-05
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Granted: 1958-01-14
•
Expires: 1975-01-05
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Calundan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:36
CPC Classifications
B; B60; B60B; B60B35/00; B60B35/003; B60B35/02; B60B35/10; B60B35/1009; B60B35/1072; B60B35/1081; B60B2310/00; B60B2310/30; B60B2310/302; B60B2310/305; B60B2900/00; B60B2900/10; B60B2900/112; B60B2900/115; B60Y; B60Y2200/00; B60Y2200/20; B60Y2200/22; B60Y2200/221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US696596A
Cited
US2148714A
Cited
US2178505A
Cited
US2264924A
Cited
US2641499A
Cited
US2750199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |