Patent US2905606A successfully refreshed from Google Patents.
US3248591A
Expired / Lapsed
US
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Discharge lamp electrode with integral cooling means
Assignee: Osram GmbH
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Filing: 1962-11-08
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Granted: 1966-04-26
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Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Arndt Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:36
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/06; H01J61/073; H01J61/0732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
AN ANODE FOR A HIGH-PRESSURE GASEOUS DISCHARGE LAMP COMPRISING A SWAGED TUNGSTEN MEMBER HAVING AN ARC-SUPPORTING TIP AND AN ELONGATED BODY PORTION THAT IS PROVIDED WITH A PLURALITY OF CIRCUMFERENTIAL THREAD-LIKE GROOVES FOR COOLING SAID ANODE, A METAL SUPPORT ROD ATTACHED TO SAID BODY PORTION, AND MEANS FOR INCREASING THE HEAT-RADIATING ABILITY OF THE GROOVED SURFACES OF SAID BODY PORTION COMPRISING AN
Claim 2
Dependent Claim
62 words
AN ANODE FOR A HIGH-PRESSURE GASEOUS DISCHARGE LAMP COMPRISING A SWAGED TUNGSTEN MEMBER HAVING AN ARC-SUPPORTING TIP AND AN ELONGATED BODY PORTION THAT IS PROVIDED WITH A PLURALITY OF CIRCUMFERENTIAL THREAD-LIKE GROOVES FOR COOLING SAID ANODE, A METAL SUPPORT ROD ATTACHED TO SAID BODY PORTION, AND MEANS FOR INCREASING THE HEAT-RADIATING ABILITY OF THE GROOVED SURFACES OF SAID BODY PORTION COMPRISING AN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |