Harness for working animal
Patent
1977-06-27
1979-02-27
Curtis, Allen B.
Harness for working animal
542444, 542447, C07D40114, C07D40310, C07D41310, C07D41314
Patent
active
041420438
ABSTRACT:
The present invention relates to compounds of formula I, ##STR1## in which R.sub.1 signifies a divalent, mono- or binuclear aromatic radical of the carbocylic or heterocyclic series, R.sub.2 signifies a hydrogen atom or an unsubstituted or substituted (C.sub.1-4)alkyl, phenyl, naphthyl or mono-or fused binuclear heterocyclic radical which is bound through a carbon atom, R.sub.3 signifies an oxygen atom or a group of formula >N--R.sub.5 in which R.sub.5 has one of the significances given above for R.sub.2, and each of the R.sub.4 's independently, signifies a mono- or binuclear aromatic radical of the carbocyclic or heterocyclic series,
REFERENCES:
patent: 2882159 (1959-04-01), Brooker et al.
patent: 2903452 (1959-09-01), Smith
patent: 2977371 (1961-03-01), Dixon
patent: 3538222 (1970-11-01), Shukys
patent: 3617170 (1971-11-01), Hansen et al.
Borovian Joseph J.
Curtis Allen B.
Sandoz Ltd.
Sharkin Gerald D.
Vila Richard E.
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