German patents abstracts.
Derwent Publications, Ltd.
London : Derwent Publications,
c1980-1988.
Issues also carry dates abstracts were issued, 11 June 80-12 Oct. 88.
Merged with: German patents gazette. Sections P, Q, General/mechanical, and: German patents gazette. Section El, Electrical, to form: German patents abstracts. Examined. P-X, General/mechanical/electrical ; German patents abstracts. Unexamined. PQ, General/mechanical ; German patents abstracts. Unexamined. S-X, Electrical.
Patents
Electric apparatus and appliances
German patents abstracts. Sections P, Q, R, General, mechanical, electrical
German patents gazette. Sections P, Q, General/mechanical
German patents gazette. Section El, Electrical
German patents abstracts. Examined. P-X, General/mechanical/electrical
German patents abstracts. Unexamined. PQ, General/mechanical
German patents abstracts. Unexamined. S-X, Electrical