But not, you will notice, Rd. 799043. When I was at TNA, Kew, in recent months, I snapped pix of these four Registrations but obviously it didn't occur to me that I'd missed 799043 - until now. However, if you look at the discussion between Jimbob and Fred - as per the attached link - there is the possibility that the epergnes - on their own - might be a separate Registration - 799043.
https://www.glassmessages.com/index.php/topic,55117.msg312287.html#msg312287 .............. of course I could be wrong, and 799043 might refer to something entirely different.
In Lang's drawing, submitted to the BoT back in December 1934, the socket holes - in 799042 - can be seen clearly in the tops of the handles, into which the trumpets were intended to fit. I'm unable to get back to Kew at the moment, but will try and look at this one again when I can. In the meantime if anyone can confirm if my thoughts are correct that will be a great help. thanks. In fact all five consecutive Rd. Nos. were Registered on 31st December 1934.
As has been commented, probably lots of times before, Lang were agents and importers only as far as the U.K. is concerned, although apparently as Fred noted they had their own manufacturing business, in France - they Registered many glass designs around this time - all I assume manufactured outside the U.K., and as far as I know all pressed items.
The combined bowl and trumpet epergnes as shown by jimbob is an impressive centre piece - I've no idea if actual pieces for Rd. Nos. 799044, 45 and 46 have ever found their way onto the GMB.