Audio frequency amplifier
Patent
US-1985999-A
Inventor
HEINRICH KRAMBEER KARL
Assignee
SIEMENS AG
Country
United States
Dates
- Priority:1929/06/04
- Grant:1935/01/01
Description
This web page summarizes information in PubChem about patent US-1985999-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
1929/06/04
1930/07/16
1935/01/01
1935/01/01
HEINRICH KRAMBEER KARL
SIEMENS AG
United States
H03G5/06 (inventive)
H03G5/06 (inventive, first)
US-2730577-A (SEA)
- US-2256072-A
- US-1861462-A
- US-1985999-A
- US-2131109-A
- US-2056011-A
- US-2417543-A
- US-2075526-A
- US-2004101-A
- US-1724915-A
- US-1709062-A
- US-2141944-A
- US-2066940-A
- US-2023222-A
- US-2091134-A
- US-2245645-A
- US-2213591-A
- US-2164899-A
- US-2097879-A
- US-2095371-A
- US-2050679-A
- US-1937784-A
- US-1921088-A
- US-2154723-A
- US-1675848-A
- US-1740283-A
- Google PatentsLICENSE"Google Patents Research Data" by Google, based on data provided by IFI CLAIMS Patent Services and OntoChem, is licensed under a Creative Commons Attribution 4.0 International License.https://creativecommons.org/licenses/by/4.0/legalcode
- PubChem
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