Surgery – Truss – Perineal
Patent
1975-03-31
1976-04-06
Kamm, William E.
Surgery
Truss
Perineal
119 1, A61B 500
Patent
active
039482499
ABSTRACT:
Method and apparatus for detecting and marking cow's in heat utilizing a heat sensitive current generator to scan the cow's backs and generate a current in response to detection of a zone at elevated temperature, characteristic of the tail head of a cow irritated by repeated mounting by other cows. A solenoid valve opens by the current so generated to porject a marking dye onto the cow's back.
REFERENCES:
patent: 3531642 (1970-09-01), Barnes et al.
patent: 3781837 (1973-12-01), Anderson et al.
patent: 3788276 (1974-01-01), Propst et al.
patent: 3824989 (1974-07-01), Horner et al.
patent: 3844273 (1974-10-01), Polson
Kamm William E.
Stidham Melvin R.
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