Invention Holidays

There are 8 invention holidays tracked on Calendar.cx, including National Inventors Day February 11, National Teflon Day April 6, National Telephone Day April 25 and more. Browse the full list below — each with its date, category and related tags.

Date	Holiday	Category	Tags
February 11
	National Inventors Day February 11	Special Interest	Innovation Technology Creativity Invention
April 6
	National Teflon Day April 6	Food & Beverage	History Invention
April 25
	National Telephone Day April 25	Special Interest	Technology History Communication Invention
April 29
	National Zipper Day April 29	Special Interest	Fashion History Invention
May 27
	National Cellophane Tape Day May 27	Fun	History Invention Uses
May 29
	National Paperclip Day May 29	Fun	History Invention
May 30
	Loomis Day May 30	Special Interest	History Communication Invention
June 10
	National Ballpoint Pen Day June 10	Special Interest	History Writing Invention

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