File:An improved pen mechanism for certain strip-chart recorders (IA improvedpenmecha7362unit).pdf
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Original file (1,206 × 1,593 pixels, file size: 219 KB, MIME type: application/pdf, 8 pages)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:33, 4 September 2020 | 1,206 × 1,593, 8 pages (219 KB) | Fæ | FEDLINK - United States Federal Collection improvedpenmecha7362unit (User talk:Fæ/IA books#Fork8) (batch 1000-3000 #182529) |
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