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Credit
Specification of Thomas Welton : applying charcoal for curative and other purposes. Public Domain Mark. Source: Wellcome Collection.
Patent for "a new method of applying oxygenated and other gas charged charcoal for curative and other purpose". The charcoal may include "urine or other foecal matter". The product may also be used as a dentifrice.
| Location | Status | Access | |
|---|---|---|---|
Closed stores Pat. vol. 32 |
| Location | Access | ||
|---|---|---|---|
Closed stores Pat. vol. 32:41 |