Record revealed
The first American invention to obtain an English patent
These intricate 1716 drawings were submitted by Sybilla Masters in the final stage of securing a patent for machinery for 'cleaning and curing Indian corn'.
Piece
Production of calcium carbonate from shells of hens' eggs, correspondence
Catalogue reference: FD 23/729
What’s it about?
This record is about the Production of calcium carbonate from shells of hens' eggs, correspondence dating from 1961 in the series Medical Research Council: Registered Files, Scientific Matters (S Series). It is held at The National Archives, Kew.
Is it available online?
No, this record is not available online. However, you can order a copy. Other ways to view it.
Can I see it in person?
Yes, this record is held at The National Archives and is available to see in person. How to view it.
Full description and record details
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Reference (The unique identifier to the record described, used to order and refer to it)
- FD 23/729
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Date (When the record was created)
- 1961
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Description (What the record is about)
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Production of calcium carbonate from shells of hens' eggs, correspondence
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Held by (Who holds the record)
- The National Archives, Kew
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Former department reference (Former identifier given by the originating creator)
- S51/193
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Legal status (A note as to whether the record being described is a Public Record or not)
- Not Public Record(s)
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Access conditions (Information on conditions that restrict or affect access to the record)
- Closed For 50 years
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Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
- Open Document, Open Description
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Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C2170700/
How to order it
- View this record page in our current catalogue
- Check viewing and downloading options
- Select an option and follow instructions
Series information
FD 23
Medical Research Council: Registered Files, Scientific Matters (S Series)
See the series level description for more information about this record.
Catalogue hierarchy
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You are currently looking at the piece: FD 23/729
Production of calcium carbonate from shells of hens' eggs, correspondence
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