The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1989
Filed:
Dec. 18, 1987
Gunter Hammerl, Bad Reichenhall, DE;
Bosch-Siemens Hausgerate GmbH, Munchen, DE;
Abstract
An oven has a baking space wall at least partly defining a closed baking chamber to be acted upon by microwave energy with a given basic microwave frequency capable of being radiated into the baking space with a given wavelength. A lighting device for the oven includes a bulb holder, an incandescent bulb mounted on the bulb holder and protruding freely into the baking space from the baking space wall without electromagnetic shielding, and electrical connection lines supplying the incandescent bulb with current from outside the baking chamber. The incandescent bulb has a glass bulb, incandescent filament holders of equal length extending substantially, parallel and alongside one another, and an incandescent filament disposed between ends of the incandescent filament holders in the glass bulb. The filament has a longitudinal extension within which all spacings between given points along the incandescent filament are equivalent to a maximum of 10% of the given wavelength.