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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 5924394 | Rotary/linear converter An adjustable stroke reciprocating mechanism which includes a reciprocating member mounted for reciprocating movement, a rotating member mounted for rotation about a main axis (XX), a connecting rod operatively connected to the reciprocating member and a ... | 07/20/1999 |
| 5899112 | Rotary/linear converter A rotary/linear converter comprising a reciprocator having a main axis (A) and being adapted for reciprocating movement in the direction of the main axis (A) and a rotator adapted for rotating movement about the main axis (A), the converter further includ... | 05/04/1999 |
