Category:1900 patents

1900 reconstruction

1900 conversions

1900 restorations

1900 renovations

1900 repairing

1900 work's replicas

1900 productions

1900 reproductions

1900 reissue models

1900 model changed

1900 released

1900 introductions

1900 re-introductions

1900 copyrighted

1900 developments

1900 discontinuations

1900 inventions

Phase of product life cycle →

1900s patents : 1900; 1901; 1902; 1903; 1904; 1905; 1906; 1907; 1908; 1909; →

Media in category "1900 patents"

The following 3 files are in this category, out of 3 total.

Patentschrift Nr 129472 - Wurster und Seiler in Derendingen-Tübingen -Sägenschärfmaschine (14. Juni 1900) Zeichnung.jpg 979 × 705; 127 KB
Patentschrift Nr 129472 - Wurster und Seiler in Derendingen-Tübingen -Sägenschärfmaschine (14. Juni 1900).jpg 494 × 704; 121 KB
US Patent 661,619 - Magnetic recorder.jpg 1,641 × 2,648; 1.27 MB

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