US2858648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric injector for liquid fertilizer and method of treating irrigation water therewith
Assignee: Individual
•
Filing: 1955-04-14
•
Granted: 1958-11-04
•
Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Lewis D Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:09
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/04; A01C23/042; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790708A
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US914440A
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GB236775A
Cited
US2080872A
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US1999881A
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US2148671A
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US2227646A
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GB686164A
Cited
US2649203A
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US2683622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |