US2641504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agricultural spraying machine
Assignee: AIR O FAN PRODUCTS CORP
•
Filing: 1948-08-02
•
Granted: 1953-06-09
•
Expires: 1968-08-02
Abstract
No abstract record available.
Inventors
- 👤 Mayes R Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0003; A01M7/0014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB358457A
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US2099799A
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US2220082A
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US2163474A
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US2238120A
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US2321792A
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US2267194A
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US2356950A
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US2358318A
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US2374955A
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US2423008A
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GB588592A
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US2429374A
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US2454339A
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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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |