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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0226062 (1992-04-11) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 3 인용 특허 : 0 |
A timer which measures the duration of a first of two consecutive contractions and also measures the elapsed time period between the beginning of said first contraction and the beginning of a second of two consecutive contractions and which displays successive pairs of first and second contractions
A portable contraction timer for operation by a user comprising: means for programming a user selected target time; means for timing to produce a plurality of pairs of measured times; means for controlling said timing means; means for displaying said plurality of pairs of measured times and said use
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