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Austin Tsui

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You bury me when I'm alive, and dig me up when I'm dead. What am I?
Look carefully the picture and guess the game name.

Candian patent No.1

In 1869, the Canadian patent No. 1 was issued to W. Hamilton. According to the Canadian Intellectual Property Office, the first Canadian patent, issued before the present number series, "was granted in 1791 by the Governor General in Council to Angus MacDonnel, a Scottish soldier garrisoned at Quebec City, and to Samuel Hopkins, a Vermonter, for processes to make potash and soap from wood ash." Hopkins also was granted the first U.S. patent by George Washington, dated 31 July 1790 for an improvement "in the making Pot ash and Pearl ash by a new Apparatus and Process."

What's the difference between a hippo and a Zippo?

What's the difference between a hippo and a Zippo?
- One is really heavy, and the other is a little lighter.
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