I have read that 50 decks was the minimum size production run that Jack Tiefenbrun would consider.@cre009 The thing about the early numbers that perplexes me is that 40 decks would barely be enough to stock demo units into participating dealers never mind decks that were for sale.
I worked in a Dealer way back then and we did have RD11's and did get sales stock.
I will speculate there would have been risks for Hamish Robertson in trying to shift an upmarket deck with 33 rpm only so he probably looked to test the waters first so he went with the 40 and the balance going to employees. There is no indication of any advertising prior to Harrogate in September 71 and he only advertised in his own dealership after Harrogate. Hamish did strike up a distribution deal with Colin Walker that summer but initially Hamish was his own and only dealer.
Did you sell the later Dunlop-Westayr single button decks? There are only 2 limited batches of twin button decks showing up with strong indications that at least some of the second batch were factory sold.
Patent hearings require comprehensive written submissions from each party. Each side has to identify what they will be contesting in their opponents submission prior to the hearing. The hearing officers are required to be even handed in how they run the hearing. The background as provided in the articles will have been culled from the uncontested content of the submissions and I have no doubt the initial 40 decks will be accurate.