Search results for "Marshall | John | fl 1861-1862 | inventor" (1 match)
| Title | Abstract | Repository | Date Added |
|---|---|---|---|
| Marshall, John | British and French patents, 1861-1862, for John Marshall's invention for 'the collection, concentration and transmission of sound, so as to facilitate... | Senate House Library, University of London | 2006-04-11 |
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