Sudoc Stem: C 21.3 - Blacklight Search Results

Start Over Sudoc Stem C 21.3

91. Classification bulletin. 401. [Revised classification of patents].

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Feb. 24-Oct. 23, 1951. [1952.]
SuDoc number:: C 21.3:401

92. Classification bulletins. 404. Class 330. Adjustable inductor devices, Jan. 23, 1952.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1952.]
SuDoc number:: C 21.3:(nos.)

93. Classification bulletins. 406. Class 137, Fluid handling, June 6, 1952.

Corporate/Agency Authors:: Patent Office, Commerce Dept.
Publisher:: Patent Office, Commerce Dept.
Date:: [1952.]
SuDoc number:: C 21.3:(nos.)

94. Classification bulletin 397, Feb. 16-Nov. 24, 1950, containing classification orders 62-87 pertaining to classification of subjects of invention revised by Classification Group of Patent Office.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1951.]
SuDoc number:: C 21.3:397

95. Classification bulletins. 399. Class 185, Motors, spring, weight, and animal powered, Feb. 14, 1951.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1951.]
SuDoc number:: C 21.3:(nos.)

96. Classification bulletins. 400. Consolidated index to Classification bulletins 103-399, Feb. 14, 1951.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1951.]
SuDoc number:: C 21.3:(nos.)

97. Classification bulletins. 402. Class 53, Package making, Nov. 27, 1951.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1951.]
SuDoc number:: C 21.3:(nos.)

98. Classification bulletins 227-242, containing classification definitions of classes revised by Gasification Group of Patent Office, to include all changes through order 60, dated Nov. 16, 1949 [1949.]. 227. Class 89, Ordnance.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [March 1950]
SuDoc number:: C 21.3:227-242

99. Classification bulletins 227-242, containing classification definitions of classes revised by Gasification Group of Patent Office, to include all changes through order 60, dated Nov. 16, 1949 [1949.]. 228. Class 91, Coating.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [March 1950]
SuDoc number:: C 21.3:227-242

100. Classification bulletins 227-242, containing classification definitions of classes revised by Gasification Group of Patent Office, to include all changes through order 60, dated Nov. 16, 1949 [1949.]. 229. Class 92, Paper-making and fiber liberation.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [March 1950]
SuDoc number:: C 21.3:227-242

« Previous
Next »
1
2
…
6
7
8
9
10 Current Page, Page 10
11
12
13
14
…
38
39