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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0028042 (1979-04-30) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 54 인용 특허 : 0 |
A shopping cart theft prevention system which includes signal sending means and a receiver carried by the cart for receiving a cart-immobilizing or cart-mobilizing signal from the transmitter. The cart includes a frame and a sub-frame pivoted to the frame and bearing spaced cart-supporting wheels, t
An improved cart theft prevention system, said system comprising, in combination: a. signal sending means; and b. at least one cart having a signal receiving means secured thereto which is adapted to receive a signal from said sending means while at a distance therefrom, said cart comprising, in com
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