What do these 3 items have in common: a Wonderbra, a Caulking Gun, and an Automatic Lubricating Cup?

<lj-cut text="Answer Below"
Answer: all Canadian inventions.

See CBC’s Greatest Canadian Inventions for 50 of the Greatest Canadian Inventions. And vote for the best one.

I’m having a tough time deciding between the Wonderbra, Java, and the Retractable Beer Carton Handle. I’ll have to think about it some more. But seriously, how did Instant Mash Potatoes make the list – that’s embarassing.