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GB Patent: GB-618,141
Improvements in or relating to pins and plugs for electrical plug and socket connections
Patentees: Bertram Stevens (exact or similar names) - London, England William Henry Spivey (exact or similar names) - Middlesex, England USPTO Classifications: Tool Categories: electrical devices : electric switches Assignees: Smart & Brown (Engineers), Ltd. - London, England Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Feb. 17, 1949 Patent Pictures: Espacenet patent Report data errors or omissions to steward Jeff Joslin "Vintage Machinery" entry for Smart & Brown (Engineers), Ltd.

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