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ERNST J OHNELL
ERNST J OH
Active Patents
0
Total Holdings
2
Patent Holdings
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Patent No.
Title
Status
Filing Date
Grant Date
Claims
Actions
US1346509A
Explosion gas-turbine
Expired / Lapsed
1918-09-14
1920-07-13
0
Details
US1346508A
Propeller
Expired / Lapsed
1918-05-31
1920-07-13
0
Details