Inventor · disambiguated record
John P. Dugan
Also filed as: DUGAN JOHN P · DUGAN JOHN PATRICK
7 granted patents·263 citations·filing 1989–2013
88Inventor score
Files withSPECTRA PHYSICS LASERPLANE INC3AMAZON TECH INC1SPECTRA PHYSICS1SPECTRA PRECISION INC1WATT WILLIAM JAMES1
Top patents by PatentIndex Score
7 records- 0196US9517899B2System for unloading itemsAMAZON TECH INC·Filed 2013·Granted Dec 13, 2016·41 cites·18 claims
- 0295US8444369B2System and method for unloading itemsWATT WILLIAM JAMES·Filed 2009·Granted May 21, 2013·95 cites·13 claims
- 0372US5257279AAdjustable focus technique and apparatus using a moveable weak lensSPECTRA PHYSICS LASERPLANE INC·Filed 1992·Granted Oct 26, 1993·35 cites·24 claims
- 0471US5225928AFocus compensating lens for use in extreme temperaturesSPECTRA PHYSICS LASERPLANE INC·Filed 1991·Granted Jul 6, 1993·40 cites·20 claims
- 0568US5994688APosition leveling sensor for a laser transmitterSPECTRA PRECISION INC·Filed 1997·Granted Nov 30, 1999·31 cites·17 claims
- 0647US5335244ATechnique and apparatus using a moveable weak lensSPECTRA PHYSICS LASERPLANE INC·Filed 1993·Granted Aug 2, 1994·12 cites·20 claims
- 0744US4971440AProjection of two orthogonal reference light planesSPECTRA PHYSICS·Filed 1989·Granted Nov 20, 1990·9 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →