Donald R. Davidson

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Berkely Heights, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous monogrammer
- Patent number 4,434,729
- Issue date Mar 6, 1984
- The Singer Company
- Donald R. Davidson
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Embroidery attachment for electronic sewing machine
- Patent number 4,386,573
- Issue date Jun 7, 1983
- The Singer Company
- Donald R. Davidson
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Variably controllable bobbin thread pull-off mechanism
- Patent number 4,380,961
- Issue date Apr 26, 1983
- The Singer Company
- Gerhard Reinert
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Two dimensional feed for monogram sewing machine
- Patent number 4,372,237
- Issue date Feb 8, 1983
- The Singer Company
- Peter J. Totino
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Low tolerance rotary to linear transmission
- Patent number 4,176,561
- Issue date Dec 4, 1979
- The Singer Company
- Donald R. Davidson
- D05 - SEWING EMBROIDERING TUFTING
Information Patent Grant
Sewing machine stitch length override and feed balance for digital...
- Patent number 4,167,912
- Issue date Sep 18, 1979
- The Singer Company
- Robert L. Sedlatschek
- D05 - SEWING EMBROIDERING TUFTING