John A. O'Dea

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Columbus, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Transit concrete mixer with displaceable charging hopper
- Patent number 4,318,621
- Issue date Mar 9, 1982
- Jaeger Machine Company
- William A. Lawrence
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Transit concrete mixer adapted for loading and discharging aggregat...
- Patent number 4,154,534
- Issue date May 15, 1979
- The Jaeger Machine Company
- William A. Lawrence
- B28 - WORKING CEMENT, CLAY, OR STONE