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Title
'Improvements relating to Crystal Contact Devices' by Siemens Electric Lamps and Supplies Ltd Patent Application 21908/53
Reference
UK0108 SC MSS 135/C/31
Date
1953
Physical description
Number of pieces: 2
Language
English.
Persons keyword
Siemens Electric Lamps and Supplies Ltd
Conditions governing access
Open access
Level of description
file

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110000003
Special Collection Manuscripts
contains 321 parts
- UK0108 SC MSS 135
  Papers of J N Aldington
  contains 11 parts
  - UK0108 SC MSS 135/C
    Patents
    contains 53 parts
    
    UK0108 SC MSS 135/C/31
    'Improvements relating to Crystal Contact Devices' by Siemens Electric Lamps and Supplies Ltd Patent Application 21908/53

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