patent for a light-collecting reflector by Joseph H Labrum (Q31196)
From CanonBase
Revision as of 20:03, 30 April 2023 by ChrisVG (talk | contribs) (Created claim: Property:P11: Item:Q98)
No description defined
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | patent for a light-collecting reflector by Joseph H Labrum | No description defined |