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3701568
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Patent number 3,701,568
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Issue date Oct 31, 1972
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B60 - VEHICLES IN GENERAL
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3603158
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Patent number 3,603,158
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Issue date Sep 7, 1971
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B60 - VEHICLES IN GENERAL
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3556610
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Patent number 3,556,610
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Issue date Jan 19, 1971
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B60 - VEHICLES IN GENERAL
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3498422
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Patent number 3,498,422
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Issue date Mar 3, 1970
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B60 - VEHICLES IN GENERAL
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3466097
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Patent number 3,466,097
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Issue date Sep 9, 1969
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B60 - VEHICLES IN GENERAL