INPADOC Patent Family US4969018 (Original INPADOC file)
Publication No. Publication date Filing No. Priority Status Source Data
US 4969018A 1990-11-06 US 62680784A 19840702 US 62680784A 19840702 Expired National register (PAIR)
JP 61082472A 1986-04-26 JP 14411585A 19850702 US 62680784A 19840702 Unknown Espacenet
JP 2656019B2 1997-09-24 JP 14411585A 19850702 US 62680784A 19840702 Unknown JAPIO

INPADOC Legal Status 
US4969018 (Expired)
2002-12-31  -EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE Effective DATE
             20021106

JP61082472 (Unknown)
No INPADOC legal data



JP2656019 (Unknown)
No INPADOC legal data