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Cable and Wireless Ltd
Cable and
Active Patents
0
Total Holdings
2
Patent Holdings
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Patent No.
Title
Status
Filing Date
Grant Date
Claims
Actions
US2473202A
Telegraph system with code conversion and error detection
Expired / Lapsed
1948-09-21
1949-06-14
0
Details
US2131322A
Telegraph signaling apparatus
Expired / Lapsed
1935-02-21
1938-09-27
0
Details