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 |
| 4491727 | Solar radiation sensor and system including same for measuring solar radiation distribution A solar radiation sensor comprises a semispherical or spherical body member formed with a plurality of radially-extending passageways leading to individual solar-radiation sensors individually oriented and shielded so as to intercept only solar radiation ... | 01/01/1985 |