US2659556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of distributing insecticides or fungicides and steam jet-driven helicopter for performing same
Assignee: Individual
•
Filing: 1950-08-16
•
Granted: 1953-11-17
•
Expires: 1970-08-16
Abstract
No abstract record available.
Inventors
- 👤 Friedrich L U Doblhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:40
CPC Classifications
A; A01; A01M; A01M11/00; B; B64; B64D; B64D1/00; B64D1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1344661A
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US1514359A
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US1740032A
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US2001529A
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US2098887A
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US2583883A
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US2433251A
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US2583884A
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US2590457A
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US2504580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |