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WILLEMIJN HOUDSTERMAATSCHAPPIJ BV A CORP OF NETHERLANDS

WILLEMIJN
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3597549B1 US3597549B1 - - Google Patents Expired / Lapsed 1969-07-17 1983-12-06 0 Details
US3597549A High speed data communication system Expired / Lapsed 1969-07-17 1971-08-03 19 Details
US3593290A Round robin data station selective calling system Expired / Lapsed 1969-07-17 1971-07-13 12 Details