Patent US3450074A successfully refreshed from Google Patents.
US3450074A
Expired / Lapsed
US
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Seed planter for depositing fine seeds at controlled depth
Assignee: Agri-Tek Inc
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Filing: 1967-02-01
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Granted: 1969-06-17
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Expires: 1987-02-01
Abstract
No abstract record available.
Inventors
- 👤 Harold E Gatzke
- 👤 Mando S Ariens
- 👤 Vernon G Doty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/18; Y; Y10; Y10S; Y10S111/00; Y10S111/90; Y10S111/915; Y10S111/918; Y10S111/927
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2496885A
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US2611331A
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US3130694A
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US3261127A
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US3362361A
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US3322080A
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US3351031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |