Ultra Electric Patent - Relating to Speed Control Apparatus (625.169)

Ultra Electric Patent Specification 1947 – Improvements in and Relating to Speed Control Apparatus (625.169)

Ultra Electric Patent Specification 1947 - Improvements in and Relating to Speed Control Apparatus (625.169)
Original photo in the Dowty archive at the Gloucestershire Heritage Hub
Ultra Electric Patent Specification 1947 - Improvements in and Relating to Speed Control Apparatus (625.169)
Original photo in the Dowty archive at the Gloucestershire Heritage Hub
Ultra Electric Patent Specification 1947 - Improvements in and Relating to Speed Control Apparatus (625.169)
Original photo in the Dowty archive at the Gloucestershire Heritage Hub

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