Patent US2090854A successfully refreshed from Google Patents.
Patent US2761731A successfully refreshed from Google Patents.
US2761731A
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Agricultural spraying machine
Assignee: EVALYN PRESTON
•
Filing: 1952-07-01
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Granted: 1956-09-04
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Expires: 1972-07-01
Abstract
No abstract record available.
Inventors
- 👤 Richard H Fish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:30
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0003; A01M7/0014; Y; Y10; Y10S; Y10S239/00; Y10S239/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |