US2749461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp unit and inner member support
Assignee: Westinghouse Electric Corp
•
Filing: 1953-04-30
•
Granted: 1956-06-05
•
Expires: 1973-04-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank J Hierholzer
- 👤 Karl H Neulinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:42
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2104652A
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US2171234A
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US2121638A
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US2562887A
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US2545884A
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US2611883A
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US2491868A
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US2671183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |