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| Brock Spring Float Feed Patent | John Brock's spring float feed patent referred to on the Oxweld lamp marking. |  Original Image |
| Total images: 53 | Last update: 8/4/11 4:49 PM | Help | |
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| Brock Spring Float Feed Patent | John Brock's spring float feed patent referred to on the Oxweld lamp marking. | Original Image |
| Total images: 53 | Last update: 8/4/11 4:49 PM | Help | |