Publish Year Decade: 1950 - 1959 / Sudoc Stem: C 21.3 - Blacklight Search Results

Start Over Publish Year Decade 1950 - 1959 Sudoc Stem C 21.3

91. Classification bulletins 259-276, containing classification definitions of classes revised by Classification Group of Patent Office, to include m changes through order 61, dated Dec. 28, 1949. 272. Class 147, Coopering.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:259-276

92. Classification bulletins 259-276, containing classification definitions of classes revised by Classification Group of Patent Office, to include m changes through order 61, dated Dec. 28, 1949. 273. Class 148, Metal treatment.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:259-276

93. Classification bulletins 259-276, containing classification definitions of classes revised by Classification Group of Patent Office, to include m changes through order 61, dated Dec. 28, 1949. 274. Class 151, Nut and bolt locks.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:259-276

94. Classification bulletins 259-276, containing classification definitions of classes revised by Classification Group of Patent Office, to include m changes through order 61, dated Dec. 28, 1949. 275. Class 152, Resilient tires and wheels.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:259-276

95. Classification bulletins 259-276, containing classification definitions of classes revised by Classification Group of Patent Office, to include m changes through order 61, dated Dec. 28, 1949. 276. Class 153, Metal bending.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:259-276

96. Classification bulletins 324-371, containing classification definitions of classes revised by Classification Group of Patent Office, to include all changes through order 73, dated May 16, 1950. 324. Class 222, Dispensing.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:(nos.)

97. Classification bulletins 324-371, containing classification definitions of classes revised by Classification Group of Patent Office, to include all changes through order 73, dated May 16, 1950. 325. Class 230, Gas pumps and fans.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:(nos.)

98. Classification bulletins 324-371, containing classification definitions of classes revised by Classification Group of Patent Office, to include all changes through order 73, dated May 16, 1950. 326. Class 235, Registers.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:(nos.)

99. Classification bulletins 324-371, containing classification definitions of classes revised by Classification Group of Patent Office, to include all changes through order 73, dated May 16, 1950. 327. Class 236, Automatic temperature and humidity regulation.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:(nos.)

100. Classification bulletins 324-371, containing classification definitions of classes revised by Classification Group of Patent Office, to include all changes through order 73, dated May 16, 1950. 328. Class 240, Illumination.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1950.]
SuDoc number:: C 21.3:(nos.)

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