Publish Year Decade: 1960 - 1969 / Sudoc Stem: C 21.3/2 - Blacklight Search Results

Start Over Publish Year Decade 1960 - 1969 Sudoc Stem C 21.3/2

241. Classification definitions. class 44. Fuel and Igniting devices; revised by Office of Patent Classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. May 1967
SuDoc number:: C 21.3/2:(nos.)

242. Classification definitions. class 48. Gas, heating and illuminating; revised by Office of Examining and Classifying Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Sept. 1967
SuDoc number:: C 21.3/2:class(no.)

243. Classification definitions. class 5. Beds; revised by Office of Examining and Classifying Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Aug. 1967
SuDoc number:: C 21.3/2:(nos.)

244. Classification definitions. class 52. Static structures, e.g., buildings; revised by Office of Patent Classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. May 1967
SuDoc number:: C 21.3/2:(nos.)

245. Classification definitions. class 55. Gas separation; revised by Office of Examining and Classifying Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Aug. 1967
SuDoc number:: C 21.3/2:(nos.)

246. Classification definitions. class 60. Power plants; revised by Office of Examining and Classifying Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Aug. 1967
SuDoc number:: C 21.3/2:(nos.)

247. Classification definitions. class 62. Refrigeration; revised by Office of Examining and Documentation Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Nov. 1967
SuDoc number:: C 21.3/2:class(no.)

248. Classification definitions. class 65. Glass manufacturing; revised by Office of Examining and Classifying Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Oct. 1967
SuDoc number:: C 21.3/2:class(no.)

249. Classification definitions. class 71. Chemistry, fertilizers; revised by Office of Examining and Documentation Control.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Dec. 1967
SuDoc number:: C 21.3/2:class(no.)

250. Classification definitions. class 75. Metallurgy; revised by Office of Patent Classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: Revision 1. Jan. 1967
SuDoc number:: C 21.3/2:(nos.)

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