Vann Bros. Ltd. [letterhead] : manufacturers of coldlite instruments : British patents 540806, 549791, 551146.
- Vann Bros.
- Date:
- [1945?]
Licence: In copyright
Credit: Vann Bros. Ltd. [letterhead] : manufacturers of coldlite instruments : British patents 540806, 549791, 551146. Source: Wellcome Collection.
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