Type of event
Specific terms.Filed patent
Sources
National Library of Australia (incl. Trove Newspapers)
Source Details free text
"A TOOTH PASTE PATENT." The Age (Melbourne, Vic. : 1854 - 1954) 2 November 1933: 11. Web. 7 Dec 2018 .
Notes
Sealing time extended.
The patent was 'in respect of a tooth paste which the inventor claimed contained a coloring agent which disclosed film on the teeth by producing a blue-colored substance.'
