Combined transmitter and receiver for ascertaining proximity...

Details Combined transmitter and receiver for ascertaining proximity... Combined transmitter and receiver for ascertaining proximity...

2000-09-28

2001-07-17

Jackson, Marcus A. (Department: 2913)

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Lost child or person locator

Design Patent

active

D0445051

CLAIM:
The ornamental design for a combined transmitter and receiver for ascertaining proximity of children, as shown and described.

REFERENCES:
patent: D. 302535 (1989-08-01), Ernest
patent: D. 381922 (1997-08-01), Casperson
patent: D. 424464 (2000-05-01), Stephens
patent: 5021794 (1991-06-01), Lawrence
patent: 5289163 (1994-02-01), Perez et al.
patent: 5557259 (1996-09-01), Musa
patent: 5617074 (1997-04-01), White

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