Donald E. Hultberg

Follow

Person

Seattle, WA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Spherical mechanical linkage and multi-axis trackers
- Patent number 8,979,286
- Issue date Mar 17, 2015
- Donald E. Hultberg
- G01 - MEASURING TESTING
Information Patent Grant
Spherical mechanical linkage and multi-axis trackers
- Patent number 8,770,768
- Issue date Jul 8, 2014
- Donald E. Hultberg
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Spherical mechanical linkage and multi-axis trackers
- Patent number 8,540,382
- Issue date Sep 24, 2013
- Donald E. Hultberg
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Solar tracking apparatus and system
- Patent number 4,368,962
- Issue date Jan 18, 1983
- Donald E. Hultberg
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Spherical Mechanical Linkage and Multi-Axis Trackers
- Publication number 20150007673
- Publication date Jan 8, 2015
- Donald E. Hultberg
- G01 - MEASURING TESTING
Information Patent Application
SPHERICAL MECHANICAL LINKAGE AND MULTI-AXIS TRACKERS
- Publication number 20140043704
- Publication date Feb 13, 2014
- Donald E. Hultberg
- G02 - OPTICS