Patent US3468457A successfully refreshed from Google Patents.
US3468457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispenser for fertilizer
Assignee: ERNEST N MARTIN
•
Filing: 1967-12-18
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Granted: 1969-09-23
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Ernest N Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:49
CPC Classifications
A; A01; A01C; A01C15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1172005A
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US1137683A
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US1850179A
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US2286554A
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US2658644A
Cited
US2626083A
Cited
US2889959A
Cited
US2872074A
Cited
US3036737A
Cited
US3254729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |