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:
Sep. 29, 1981
Filed:
Jan. 28, 1980
Edwin H Land, Cambridge, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
An electronic flash adaptable for releasable connection to a camera of the type having an exposure control circuit automatically switchable from an ambient mode of operation to a flash mode of operation, includes an on/off power control switch adapted for automatically switching the camera control circuit to a flash mode of operation in correspondence with the powering up of the electronic flash. The electronic flash is powered by way of an extendable grip type switch which may be either stowed out of interfering relation with the position normally grasped by the camera user to accommodate use of the camera in an ambient mode of operation or extended into interfering relationship with the position normally grasped by the camera user to accommodate a flash exposure mode of operation.