| Name | Const J.A. |
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| Brief Description | At Albemarle St., Clerkenwell c1820-1825 |
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| Principal Maker | N |
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| Copyright Registrations in this name | |
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| Other Registrations | |
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| Adverts | |
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| Examples | 3 examples
| [1820-1825] | | Picture publication not permitted by holding library |
| [1820-1824] | | |
| 1822 | Circumvention rules | |
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| Three sets of rules deposited at British Library presumably for copyright, and in Google books a broadside advertised describing Const as Manufacturer of all kinds of Conjuring Tricks and Puzzling Toys |