US2874656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fertilizer subsoil injector
Assignee: Caterpillar Inc
•
Filing: 1956-01-17
•
Granted: 1959-02-24
•
Expires: 1976-01-17
Abstract
No abstract record available.
Inventors
- 👤 Francis W Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:43
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1087006A
Cited
US1122147A
Cited
DE677359C
Cited
US2322256A
Cited
US2424520A
Cited
FR951823A
Cited
US2598121A
Cited
US2569556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |