US Patent: 1,563,046
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| Method of and Apparatus for Measurement and/or Standardization
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Patentees:
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| John Edward Sears, Jr. (exact or similar names) - Teddington, Middlesex, England |
| Arthur John Charles Brookes (exact or similar names) - Teddington, Middlesex, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 31, 1920 |
| Granted: |
Nov. 24, 1925 |
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Joel Havens
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Description: |
| H. R. Kerslake - patent attorney
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