Caldwell Photographic, Inc.

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Petersburg, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Optical attachment for reducing the focal length of an objective lens
- Patent number 8,903,232
- Issue date Dec 2, 2014
- Caldwell Photographic, Inc.
- J. Brian Caldwell
- G02 - OPTICS
Information Patent Grant
Optical attachment for reducing the focal length of an objective lens
- Patent number 8,879,901
- Issue date Nov 4, 2014
- Caldwell Photographic, Inc.
- J. Brian Caldwell
- G02 - OPTICS
Information Patent Grant
Large aperture imaging optical systems
- Patent number 8,169,717
- Issue date May 1, 2012
- Caldwell Photographic, Inc.
- J. Brian Caldwell
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Corrective optical systems and methods
- Publication number 20140085532
- Publication date Mar 27, 2014
- Caldwell Photographic, Inc.
- J. Brian Caldwell
- G02 - OPTICS

Trademarklast 30 trademarks