Page values for "GB 4"
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"Techtypes" values
1 row is stored for this page| Field | Field type | Value |
|---|---|---|
| Enclosing_categories | List of Page, delimiter: ; | British patent classifications |
| Subcategories | List of Page, delimiter: ; | GB 4 with buoyant • GB 4 without buoyant • GB 4 aëroplanes • GB 4 aërostats • GB 4, 1905 • GB 4, 1909 |
