US3609913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory control
Assignee: International Electric Fence Co Inc
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Filing: 1969-07-24
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Granted: 1971-10-05
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Expires: 1989-07-24
Abstract
Abstract AN AGRICULTURAL MACHINE WHICH IS MOVED ALONG THE GROUND OVER A ROW OF PLANTS AND WHICH HAS A PLANT DETECTING MEANS FOR SENSING THE PRESENCE OF PLANTS AND WHICH CONTROLS A HERBICIDE SPRAYER SO AS TO SELECTIVELY DESTROY PLANTS IN THE ROW. AN ELECTRONIC CONTROL SYSTEM DETECTS THE OUTPUT OF THE PLANT DETECTING MEANS AND CONTROLS THE HERBICIDE SPRAYER TO ALLOW SELECTIVE SPACING OF THE PLANTS.
Inventors
- 👤 Gilbert M Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:02
CPC Classifications
A; A01; A01B; A01B41/00; A01B41/06; A01M; A01M21/00; A01M21/04; A01M21/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |