Double-based, double-ended, pinch-sealed electric lamp with integral base

Double-based, double ended, pinch-sealed electrical lamp having

• a vacuum-tight lamp bulb (1, 30) of glass defining a longitudinal lamp axis (A);
• light-emitting means (3, 31) located within said bulb;
• pinch seals (6, 12) located at opposite outer ends of said bulb along said axis, and defining outer end portions thereof, each pinch seal including:
• outer current supply leads (15, 21, 25, 34), pinched foils (7,33) connecting the light-emitting means (3, 31) with the outer current supply leads;
• and
• a lamp base at each end of the lamp, including a contact element electrically connected with one of said outer current supply leads (15, 21, 25, 34),
• wherein, in accordance with the invention,
• each lamp base comprises
• a sleeve (11) made of the same material as the lamp bulb and formed on the outer end portion of the respective pinch seal (6, 32) as an integral part of the respective outer end portion;
• and
• wherein the contact element (13, 17, 18, 19, 26, 26') is secured to the interior of said sleeve (11), retained by said sleeve, and extends in a plane essentially transverse to said lamp axis (A),
• whereby the bulb and the base sleeve, retaining said contact element, form an integral unitary structure.