| Reference number | NLB/54/688 |
| Alternative reference number | NLB/54 p396 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Registrar of the Patent Office; Trade Marks Branch, Chancery Lane, W.C. |
| Date | 2 August 1917 |
| Description | Refers to the registration of the National Physical Laboratory. Explains to the Registrar that it has recently been found necessary to distinguish between gauges of similar type but of different classes, and for this purpose the Laboratory requires a third Trade Mark. Explains that the Society therefore desires to make application for the registration of a third Trade Mark and encloses the necessary application form. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |