• Ceylon Government Gazette, Part - I : Section - III ,Trade Mark And Patent Notices 14 265, December 24 Thursday, 1964 

  Government of Ceylon (Ceylon Government Printer, 1964-12-24)
• Ceylon Government Gazette, Part - I : Section - III ,Trade Mark And Patent Notices 14 261, December 17 Thursday, 1964 

  Government of Ceylon (Ceylon Government Printer, 1964-12-17)
• Ceylon Government Gazette, Part - I : Section - III ,Trade Mark And Patent Notices 14 255, December 11 Friday, 1964 

  Government of Ceylon (Ceylon Government Printer, 1964-12-11)
• Ceylon Government Gazette, Part - I : Section- III ,Trade Mark And Patent Notices 14 247, December 04 Friday, 1964 

  Government of Ceylon (Ceylon Government Printer, 1964-01-04)
• Ceylon Government Gazette, Part - I : Section - III ,Trade Mark And Patent Notices 14 239, November 27 Friday, 1964 

  Government of Ceylon (Ceylon Government Printer, 1964-11-27)

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