Patent US5209592A successfully refreshed from Google Patents.
Patent US2941753A successfully refreshed from Google Patents.
US2941753A
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US
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Aerial spraying of land or crops
Assignee: Individual
•
Filing: 1954-09-03
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Granted: 1960-06-21
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Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 Ripper Walter Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:48
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/0202; B; B64; B64D; B64D1/00; B64D1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE728025C
Cited
US2397475A
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US2479549A
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US2784402A
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US2537251A
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US2709773A
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US2583884A
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US2620148A
Cited
US2674820A
Cited
US2659556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |