Patent US2467530A successfully refreshed from Google Patents.
US2467530A
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Coupling device
Assignee: Deere and Co
•
Filing: 1947-04-10
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Granted: 1949-04-19
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Expires: 1967-04-10
Abstract
No abstract record available.
Inventors
- 👤 Elisworth T Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:58
CPC Classifications
A; A01; A01D; A01D67/00; A01D67/005; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/451; Y10T403/452; Y10T403/455; Y10T403/458
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US747043A
Cited
US747039A
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US1993260A
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US2168148A
Cited
US2136440A
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US2189864A
Cited
US2361362A
Cited
US2362712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |