US3473614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agricultural and like machines
Assignee: National Research Development Corp UK
•
Filing: 1966-10-27
•
Granted: 1969-10-21
•
Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Ivor Frederick Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:15
CPC Classifications
A; A01; A01D; A01D23/00; A01D23/04; A01D25/00; A01D25/04; A01D25/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1142050A
Cited
US1905194A
Cited
US2562400A
Cited
US2534685A
Cited
US3222852A
Cited
US3366184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |