The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 1997
Filed:
Apr. 24, 1995
Mark Hattan, Orange, CA (US);
Other;
Abstract
A multi-stage focus box camera is disclosed which comprises a tubular body open at both ends formed of a dimensionally stable, light weight material. A lens board and lens extender assembly slides over one end of the camera body and is adapted for slidingly carrying a lens mount for a lens. A film board fits over the opposite end of the camera body and is adapted to receive a film holder which closes the back side of the body and which defines a film support for sheet film. In addition the film board may include a viewing device, such as a ground glass plate in place of the film board, by which an image may be focused. Both the lens board and lens extender assembly and the film board are slidable on the camera body and are movable between retracted and extended positions to provide different focus stages for the camera. In addition the lens board and lens extender assembly and the film board can be moved on the camera body to position the lens body to adjust the depth of field by slanting these components.