Properties (9)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
patent
|
| gptkbp:abstract |
unknown
|
| gptkbp:applicationNumber |
unknown
|
| gptkbp:filedIn |
unknown
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 2,109,873
|
| gptkbp:issuedBy |
unknown
1938-03-15 |
| gptkbp:patentType |
utility
|
| gptkbp:title |
unknown
|