Patent US2931140A successfully refreshed from Google Patents.
US2931140A
Expired / Lapsed
US
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Cartridges for fertilizers, fungicides and/or insecticides
Assignee: ROMBOUGH
•
Filing: 1958-05-13
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Granted: 1960-04-05
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Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robert C Laffier
- 👤 Rombough Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:04
CPC Classifications
A; A01; A01C; A01C21/00; C; C05; C05G; C05G5/00; C05G5/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US806838A
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US1135346A
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US1948117A
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US1971390A
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US2032608A
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US2082712A
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US2380721A
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US2796701A
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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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |