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• 000 00700nam a2200193 a 4500

• 001 0000320999

• 005 20191003123700.0

• 008 070910s1970 dcu i 000 0 eng

• 020 __ |c CNY3.20

• 040 __ |a CAU |c CAU

• 090 __ |a N18-7/USP/(1969)/V.2

• 093 __ |a N18-7 |2 5

• 110 2_ |a United States. |b Patent office.

• 245 10 |a Index of patents issued from the United States Patent, 1969. |n Part II, |p Index to subjects of invention.

• 260 __ |a Washington : |b U.S. Government printing office, |c 1970.

• 300 __ |a 340 p. : |b ill. ; |c 22 cm.

• 500 __ |a "For sale by the Superintendent of documents, U. S. Government Printing office, Washington, D. C."

• 650 _0 |a Patents |z United States.

• 920 __ |a 211180 |z 1