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| All Patents in class D27/173 | |||||
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| Number | Date | Patentee | Title | Type | |
| 470,858 | Mar. 15, 1892 | R. Klinger | Water-gage | boiler water gauges | |
| 2,136,989 | Nov. 15, 1938 | M.A. Bell | Match display and holder | ||