Difference between revisions of "patent for a light-collecting reflector by Joseph H Labrum (Q31196)"
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(Created a new Item: patent for a light-collecting reflector) | (Changed [en] label: patent for a light-collecting reflector by Joseph H Labrum) | ||
| label / en | label / en | ||
| - | + | patent for a light-collecting reflector by Joseph H Labrum | |
Revision as of 20:03, 30 April 2023
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | patent for a light-collecting reflector by Joseph H Labrum | No description defined |