US3606097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for distributing granular material and the like
Assignee: Air Spread Inc
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Filing: 1969-07-15
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Granted: 1971-09-20
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Expires: 1989-07-15
Abstract
Abstract AN APPARATUS FOR DISTRIBUTING GRANULAR MATERIAL SUCH AS FERTILIZER OR SALT-SAND MIXTURES FOR ICE CONTROL, BY USING AIR AS THE CONVEYING MEDIUM AND PROPELLING FORCE TO DISTRIBUTE THE MATERIAL OVER A SELECTED AREA. THE APPARATUS IS USED ON MOVABLE EQUIPMENT EITHER IN CROP FARMING OR IN ICE CONTROL FOR HIGHWAYS AND STREETS.
Inventors
- 👤 George B Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:11
CPC Classifications
A; A01; A01C; A01C15/00; A01C15/04; Y; Y10; Y10S; Y10S239/00; Y10S239/21
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |