Robert Conrad Hauf

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Upper Montclair, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic one-step buttonholing device
- Patent number 4,056,070
- Issue date Nov 1, 1977
- The Singer Company
- Robert Conrad Hauf
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Automatic buttonholing sizing device
- Patent number 4,019,449
- Issue date Apr 26, 1977
- The Singer Company
- Robert Conrad Hauf
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Single pattern control of sewing machines
- Patent number 3,987,739
- Issue date Oct 26, 1976
- The Singer Company
- John Whilldin Wurst
- D05 - SEWING EMBROIDERING TUFTING