searching for OSHCA 1 found (2 total)
alternate case: oSHCA
Timeline of United States inventions (before 1890)
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id xB-IYRlR1REC&pg PT59&dq john+thurman+vacuum+cleaner&hl en&sa X&ei AnfjT7GxI5Ko8gT-8oSHCA&ved 0CFUQ6AEwBA#v onepage&q john%20thurman%20 ...