INPADOC Patent Family US4540591 (Original INPADOC file)
Publication No. Publication date Filing No. Priority Status Source Data
US 4540591A 1985-09-10 US 68085584A 19841212 US 43996782A 19821108
US 68085584A 19841212		 Expired National register (PAIR)

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US4540591 (Expired)
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