Surviving X-patents are scattered far and wide. Some are at grand repositories like the National Archives and the Smithsonian Institution. Others are at state and local archives, buried amid the papers of inventors, their businesses, or their families.
Some inventors move way too fast to market, overlooking key considerations that could help them succeed or prevent them from wasting a lot of money. Some inventors move too slowly, paralyzed from too much analysis, and fail to move on their idea when it has a chance to succeed.
The makers of the Tetra Puzzle say “It's a captivating and mysterious challenge to understand and unlock. It activates your spatial reasoning and manual dexterity skills in a way that's immersive and deeply engaging.”