Philip M. Sadler

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Cambridge, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Sunspotter solar telescope
- Patent number 7,177,077
- Issue date Feb 13, 2007
- Learning Technologies Inc.
- Philip M Sadler
- G02 - OPTICS
Information Patent Grant
Planetarium and point light source for use in same
- Patent number 7,004,588
- Issue date Feb 28, 2006
- Learning Technologies, Inc.
- Phillip M. Sadler
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Sunspotter solar telescope
- Patent number 6,614,593
- Issue date Sep 2, 2003
- Learning Technologies, Inc.
- Philip M Sadler
- G02 - OPTICS
Information Patent Grant
Cylindrical planetarium projector
- Patent number 4,178,701
- Issue date Dec 18, 1979
- Philip M. Sadler
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Wide angle lens assembly for projector and an optical system having...
- Publication number 20070097331
- Publication date May 3, 2007
- Learning Technologies, Inc.
- Philip M. Sadler
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Sunspotter solar telescope
- Publication number 20040027660
- Publication date Feb 12, 2004
- Learning Technologies, Inc.
- Philip M. Sadler
- G02 - OPTICS
Information Patent Application
Planetarium and point light source for use in same
- Publication number 20040014012
- Publication date Jan 22, 2004
- Learning Technologies, Inc.
- Phillip M. Sadler
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Sunspotter solar telescope
- Publication number 20020131168
- Publication date Sep 19, 2002
- Learning Technologies, Inc.
- Philip M. Sadler
- G02 - OPTICS