DUFFERS SCIENTIFIC, INC., A NY CORP

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TROY, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Signal controlled waveform recorder
- Patent number RE34843
- Issue date Jan 31, 1995
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- 360 - Dynamic magnetic information storage or retrieval
Information Patent Grant
Test specimen/jaw assembly that exhibits both self-resistive and se...
- Patent number 5,202,542
- Issue date Apr 13, 1993
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for optically measuring specimen deformation during mater...
- Patent number 5,199,304
- Issue date Apr 6, 1993
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G01 - MEASURING TESTING
Information Patent Grant
Dynamic thermal-mechanical material testing system utilizing a bala...
- Patent number 5,195,378
- Issue date Mar 23, 1993
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G01 - MEASURING TESTING
Information Patent Grant
Dynamic material testing system having independent control over spe...
- Patent number 5,092,179
- Issue date Mar 3, 1992
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for measuring and controlling indentation in r...
- Patent number 4,734,555
- Issue date Mar 29, 1988
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
One step RMS system
- Patent number 4,721,906
- Issue date Jan 26, 1988
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G01 - MEASURING TESTING
Information Patent Grant
Signal controlled waveform recorder
- Patent number 4,631,697
- Issue date Dec 23, 1986
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G01 - MEASURING TESTING
Information Patent Grant
Bumpless feedback switching apparatus for use in a servo system
- Patent number 4,509,000
- Issue date Apr 2, 1985
- Duffers Scientific, Inc.
- Hugo S. Ferguson
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
74162920 - HYDRAWEDGE
- Serial number 74162920
- Registration number 1746332
- Filing date May 2, 1991
- DUFFERS SCIENTIFIC, INC.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73444272 - DATALYZER
- Serial number 73444272
- Registration number 1295865
- Filing date Sep 19, 1983
- Duffers Scientific, Inc.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments

DUFFERS SCIENTIFIC, INC., A NY CORP

Organization

Patents Grantslast 30 patents

Signal controlled waveform recorder

Test specimen/jaw assembly that exhibits both self-resistive and se...

Apparatus for optically measuring specimen deformation during mater...

Dynamic thermal-mechanical material testing system utilizing a bala...

Dynamic material testing system having independent control over spe...

Method and apparatus for measuring and controlling indentation in r...

One step RMS system

Signal controlled waveform recorder

Bumpless feedback switching apparatus for use in a servo system

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

74162920 - HYDRAWEDGE

73444272 - DATALYZER