Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 4030014 | Current-to-current electrical isolator A current-to-current isolator is utilized in a monitoring system between a signal transmitter and a control room instrument. The isolator has a master oscillator, including a first transformer, a slave oscillator, a current transformer and a rectifying ci... | 06/14/1977 |
| 3959724 | Electronic wattmeter An electronic wattmeter (transducer) to measure the average power to a load or on an electric power line includes a current transformer, a voltage transformer and a power transformer, the primary coil of each transformer being connected to the power line.... | 05/25/1976 |
| 3959786 | Isolated two-wire transmitter An isolated two-wire transmitter includes a regulated d.c. power supply having an astable multivibrator which generates isolated power supplies and input terminals which are connected to a first operational amplifier to thereby control a transistor in ord... | 05/25/1976 |
