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 |
| 4325523 | Film advancing arrangement A film advancing arrangement for a film projector having an optical system and two spools between which a film is advanced, comprises two spool supports for carrying a supply spool and a takeup spool respectively. The spool supports are pivotally mounted ... | 04/20/1982 |
| 4198136 | Reproducing of interspersed motion-picture scenes and still shots The reproducing apparatus, such as a motion-picture film projector, stops recording medium transport in response to interrupt-transport frame markings on the recording medium and reproduces the thusly marked image frames as still images. Interrupt-transpo... | 04/15/1980 |
| 4194817 | Marking of interspersed motion-picture scenes and still shots with interrupt-transport markings The user of a motion-picture camera selects between motion-picture and single-exposure operation, and presses a release member to initiate shooting, letting go of it to terminate motion-picture shooting. Each time the user lets go of the release member, a... | 03/25/1980 |
| 4103993 | Motion picture camera with variable focal length lens A motion picture camera with variable focal length lens wherein the zooming collar and the distance selecting or focusing collar on the lens barrel are rotatable to neutral positions by an actuating member which is movable at right angles to or in paralle... | 08/01/1978 |
