Frank thank you. So, if I have understood correctly, thus far we could be looking at:
- 30's or later given that
a) cadmium was in wider use then and
b) assuming the patent having not been renewed -(and given H Wilkinson, if he is the same one and assuming he was at Thomas Webb and Son in 1905, moved companies in 1921, I suppose it could be likely the patent may not have been renewed). I will have a check to see if I can find out where he was in 1905 and whether it was Thomas Webb and Son and
c) It appears from the pictures in Charles Hajdamach's 20th Century British Glass, page 93 and 94, that Gray Stan were using the same or similar technique on some of their items, therefore it could
be assumed for arguments sake (and not interrogating whether the process they used was exactly the same) that the patent had not been renewed. HOwever I am not sure what date these pieces are from. They could be prior to 1930 which would indicate that either she used the technique whilst it was still patented or, it's a similar effect but different technique.
However, we're probably not looking at Gray Stan given the pontil mark generally doesn't seem to be right (techniques of making this particular item notwithstanding) and the handle is applied bottom up which is not how Gray Stan applied the handles - there are 9 different pictures of Gray Stan items with handles in 20th Century British Glass CH, and all of them have handles applied top down. (Question though... all these items have fairly 'straight' sides in line with where the handle starts at the top, whereas applying a top down handle onto my decanter vase would be more difficult as the sides bulge out so far widthways from where the handle needs to start at the neck. But on balance of probability probably not them)
Or we could be looking at:
- 1905 to 1930, given that cadmium was in use then and that this technique was patented in 1905 and the patent would have run to 1930 before needing renewal. So would this mean then, if it fell in that time frame, that it could fall under the Thomas Webb umbrella (Where H Wilkinson may have been working at the time it was patented according to that info on the Tudor Crystal site) or The Stourbridge Glass Co Ltd given that he moved there in 1921 (in CH's book it says that H Wilkinson patented that technique, so presumably he took the patent with him?).
If we are looking at, say, 1930's and the patent was renewed, I assume that could mean the patent would be with The Stourbridge Glass company if he were still there.
But, again, I'm not sure this is crystal. If it isn't, does that negate Thomas Webb and Sons and The Stourbridge Glass Co Ltd?
More searching required I think