US3481540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agricultural spraying process and device
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1967-09-20
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Granted: 1969-12-02
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Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 Derek Laurie Maytum
- 👤 Karl Heinz Eggerstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0089; A01M7/0092; G; G05; G05D; G05D11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB916025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |