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Credit
Specification of John Tonkin Cocking : plastic material for splints, &c. Public Domain Mark. Source: Wellcome Collection.
Patent for a material made of "hair, wool, fur, cotton and other animal and vegetable fibre, felted together, and afterwards made rigid by a mixture of shellac, resin, thusk, borax, and water".
| Location | Status | Access | |
|---|---|---|---|
Closed stores Pat. vol. 33 |
| Location | Access | ||
|---|---|---|---|
Closed stores Pat. vol. 33:27 |