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De Havilland Aircraft Co Ltd

De Havilla
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2401826A Turbine Expired / Lapsed 1943-07-20 1946-06-11 0 Details
US2374344A Toothed-gear coupling Expired / Lapsed 1943-08-21 1945-04-24 0 Details
US2373827A Manufacture of pieces which are shaped by grinding Expired / Lapsed 1943-08-03 1945-04-17 0 Details