Electronic Products

Consumer electronics range from light to very sophisticated gadgets, wherein consumers have to make an informed decision based on factors that are comparable as style and price that in turn are major performance parameters.

The process of chalking out electronic devices is also merged with other disciplines like spectrometry and computer sciences and calculators.

Transistors replaced vacuum tube processors in early electronic products. Ball Grid Array (BGA) transistors are used to mount microporcessors, as it has more interconnection pins.

The concept of electronics is closely linked with the flow of electric charge that is controlled by using logic gates applied through a transistor, made of sheets of semiconductor material, having the minimum of three terminals for external circuit connection.

Electronic products are not only used in daily life applications, but are also useful for security personnel and defense installments, and those are exclusively classified as military electronics. The mission-critical applications add to the vital characteristic of the devices used in artillery, ground and air combat operations.

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Vokar (Electronic Products Mfg.) products, Nov 45 PopPho pg. 121
Electronic products

Image by camerawiki
Electronic Products Mfg. Corp was a company taken over by Charles Verschoor after his 1938 ouster from Argus Camera. Vokar was its brand for several photographic products. The company was briefly (1942-1945) renamed Verschoor Corporation, then reverted to Electronic Products. Verschoor himself died in September, 1943.

By the December 1945 advertisement in Popular Photography, the company name had become Vokar.

“Watch for Announcement of the New and Finer Vokar Camera.”

At the end of 1945, Vokar launched the ambitious Vokar I rangefinder camera; but the camera (and the company) did not survive for long.


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Documents published without copyright notice in the United States before January 1st, 1978 are in public domain in that country.[1]

They are also in public domain in the European Union, where the “shorter term” rule applies to foreign works, and foreign documents which are already in public domain in their home country are not further protected.[2]

The advertising material inserted by a company in a magazine usually does not have a copyright notice. It is sincerely believed by the Camera-wiki members who discussed this question that the copyright notice which might appear on the magazine itself, on behalf of its publisher, does not extend to the advertisements, on which the publishing company owns no right and which would be the property of the advertising company if it wanted to claim its rights.

[1] Copyright Term and the Public Domain in the United States, 1 January 2007, by Peter B. Hirtle.

[2] Council Directive 93/98/EEC of 29 October 1993 harmonizing the term of protection of copyright and certain related rights.

Further reading on US copyright law: Circular 1:Copyright Basics (1.1Mb PDF) from United States Copyright office