[jaylevitt]

Then you'll be surprised to learn that these were once trademarks:

- Aspirin - Escalator - Yo-yo - Zipper

[chalst]

Ah, you are right. Though Aspirin is not like the others: Bayer lost its intellectual property in the Treaty of Versailles.

[peterwwillis]

Zipper was a trademark?! I need a kleenex, and maybe a band-aid, and a ziploc to put the waste in :-(

[sharkweek]

don't forget to clean your ears out with a q-tip!