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• 245 00 |a Electrical patents index, alerting abstracts bulletin (country order) |n U, |p Semiconductors and electronic circuitry.

• 246 30 |a Electrical patents index. U, Semiconductors and electronic circuitry.

• 246 30 |a Alerting abstracts bulletin

• 260 __ |a London, GBR : |b Derwent Publication Ltd., |c 1991-

• 300 __ |a v. : |b ill ; |c 29 cm.

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• 362 1_ |a Week 9101 (20, Feb. 1991)- .

• 500 __ |a Patents from 32 countries.

• 650 _0 |a Semiconductors |x Patents |v Periodicals.

• 650 _0 |a Electric circuits |x Patents |v Periodicals.

• 650 _0 |a Electricity |x Abstracts |v Periodicals.

• 650 _0 |a Electricity |x Patents |v Periodicals.

• 780 01 |t Electrical patents index, country bulletin, sec. U-V, semiconductors electronic circuitry, eletronic components.

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