| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Control | |
| #5 | Medical technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Obermaier John A | 22 |
| #2 | Obermaier Alfred A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2690671A | Air velocity meter | |
| US2413414A | Frictional holding means | |
| US2412418A | Securing and sealing means for meter box housings | |
| US2425557A | Pyrometer | |
| US2397975A | Carrying case | |
| US2422124A | Flexibly mounted thermocouple for measuring surface temperature | |
| US2379031A | Carrying case | |
| US2321846A | Temperature responsive device | |
| US2285457A | Pyrometer | |
| US2106756A | Liquid level change detector | |
| US2131066A | Sealed connecter | |
| US2103548A | Electric connecter | |
| US2131065A | Resistance thermometer | |
| US2072312A | Temperature indicating instrument | |
| US2059480A | Thermocouple | |
| US1798896A | Switch | |
| US1936140A | Pyrometer | |
| US1449437A | Flow meter | |
| US1282621A | Graphic meter and the like. | |
| CA452114A | Frictional holding means |