Famous Patents
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 |
| 5333703 | Carbon monoxide sensor and control for motor vehicles A system for monitoring carbon monoxide (CO) levels produced by the operation of a vehicle's engine. The system includes a detector in the vehicle's passenger compartment for detecting the concentration of CO inside the compartment and circuitry for gener... | 08/02/1994 |
