US2993191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base for electric discharge lamp
Assignee: Osram GmbH
•
Filing: 1957-03-25
•
Granted: 1961-07-18
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Pietzsch Herbert
- 👤 Sorge Ottokar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; H01J5/54
Claims Analysis
Total Claims: 0
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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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |