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The result of this new invention is the resonator guitar, as we know it today. They had been working for some time outside the company on a new-style resonator assembly, which they were quick to patent upon their departure from National. Because of internal frictions with other parties within the company, John and his younger brother Rudy divested all their interest in National-including patents which they held for National instruments-and left the company in 1928.
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The Dopyera brothers, of whom there were five-John, Robert, Rudolph (Rudy), Louis, and Emil (Ed)-were heavily involved in the National Company, both as inventors and investors.
REGAL DOBRO GUITAR SERIAL NUMBERS SERIES
The wooden-body, resonator guitar as we know it today came about through of a series of events which occurred in the National String Instrument Company, which was formed in 1925 and co-owned by a Slovak immigrant family, the Dopyeras, along with several other investors.
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To better understand the many variables that played a part in the production of pre-war Dobro®'s, and that therefore are involved in recognizing and identifying these guitars and their date and point of manufacture, it is imperative that you learn a little of the background and history of the companies involved in the manufacture of these vintage instruments. You are sure to find the history and construction of the early Dobro® guitars to be an absorbing and fascinating subject, and you'll be surprised to find that the process of identifying these early instruments can be quite simple, provided you know what to look for-and by the time you've finished this article, you will know what to look for! Then, finally, we'll take a look at the individual models that were in production during this pre-war era and discuss the many features that went into each of them. (As we go along, you'll find that some knowledge of this historical background is very helpful when you start attempting to identify various models of guitars.) We will then make a short study of the construction characteristics that were unique to the different production facilities and to different time periods and that help to make the identification of these early guitars possible. We will start at taking a brief look at the history surrounding the companies that built the early Dobro® guitars. The most complimentary thing that can be said about the consistency of the companies in this pre-war era is that "During this period of time, the companies were consistently inconsistent." Since so little information is available in one location concerning pre-war instruments, this is an effort to cover in-depth the guitars which fall into that category, which were made by the companies involved in their manufacture from 1928-1941.īefore we look at the various models produced by these companies, it is important to understand the following: Just when you think you have all the pertinent information about a particular model or event, along comes a variation in one thing or another which is totally unexpected. It is, after all, the preferred instrument for a bluegrass band setting. By Randy order to keep this in a manageable format and size, only wooden-bodied screen hole resonator guitars will be addressed in this article.