Plant husbandry – Frost preventing
Patent
1982-12-03
1985-02-26
Hafer, Robert A.
Plant husbandry
Frost preventing
A01G 1300
Patent
active
045010897
ABSTRACT:
A frost minimization or prevention machine comprising a fan to draw air downwardly from above the crop to be protected and disperse the air horizontally over the crop. Ideally the fan draws down warmer air from above the inversion layer.
REFERENCES:
patent: 2165148 (1939-07-01), Nelson et al.
patent: 2418012 (1947-03-01), Chester
patent: 4087994 (1978-05-01), Goodloxson
Cobden Turbines Pty. Ltd.
Hafer Robert A.
Lewis Bradley M.
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