Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Papers re. sparking plug, 1917
2001.142/29 (1 of 4) - French Letters Patent no. 485997. Date 30th June 1917. Patentee C.H. Watkins. Green envelope containing - 2001.142/29 (2 of 4) - Specification for 'An improved lighting for road vehicles and the like'. Stamped 26 Jan. 1950. 2001.142/29 (3 of 4) - Receipt 'For current renewal fees on French Patent No. 485997 and Italian Patent No. 472/207'. Dated Sept. 29th 1920. 2001.142/29 (4 of 4) - Patent receipt number 83,065. Dated 30th June 1921. Printed in French on green paper.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.