If we consider the Fitzall Loc-Nob, it was not issued as early as the 1914 patent short globes. After all, the loc-nob was invented for the short globe. The 1914 Fitzall was introduced in 1918 and I think it corresponds with putting the bogus 2-18-18 on the short globes. Dietz sported several bogus patents on lanterns and two of them appear on globes. The second is the bogus January 1923 patent on the Junior Loc-Nob.
When Dietz filed in late 1922, they had a reasonable expectation of receiving the patent by January since it is based on their previous 1914 patent. So they speculated on having this early 1923 patent and ordered it put on the Junior Loc-Nob. For whatever delay, the patent was not issued until 12-4-23. At some point after this date, they decided to sport it on the Fitzall. So the 1923 Fitzall was introduced 1924 or later. I think the issue corresponds with the reduction of the size of the wave in the globe wires in 1926, as the 1923 globe has smaller loc-nobs. In my experience, the 1923 and the Syracuse are by far the rarest compared to the 1914 and the Reg'd in USA. Both are rarer by means of short production periods, in my opinion. That would mean 1925-1934 for the 1923, and 1946-1952 for the Syracuse(Reg. US Pat Ofc).
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