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Priority to JP7714583UpriorityCriticalpatent/JPS59183900U/ja
Publication of JPS59183900UpublicationCriticalpatent/JPS59183900U/ja
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Publication of JPS6244881Y2publicationCriticalpatent/JPS6244881Y2/ja
Manually operable liquid dispensing pump with water seal for maintaining container vent port sealed during pumping until at or near the end of the pressure stroke plunger