US2456491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor implement
Assignee: RhinoAg Inc
•
Filing: 1945-09-04
•
Granted: 1948-12-14
•
Expires: 1965-09-04
Abstract
No abstract record available.
Inventors
- 👤 Johnnie C Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/0053; A01D87/0069; B; B62; B62D; B62D49/00; B62D49/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1785122A
Cited
GB391777A
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US2295917A
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US2348796A
Cited
US2306313A
Cited
US2332742A
Cited
US2404820A
Cited
US2391224A
Cited
US2393435A
Cited
US2417021A
Cited
US2421566A
Cited
US2417560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |