Patent US2097417A successfully refreshed from Google Patents.
US2545307A
Expired / Lapsed
US
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Lighting fixture for elongated tubular fluorescent lamps
Assignee: ILLUMINATING ENGINEERING Co
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Filing: 1946-10-17
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Granted: 1951-03-13
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Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Bert C Pretzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21S8/06; F21V; F21V21/00; F21V21/10; F21V21/112; F21V21/34; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 0
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US2347112A
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US2395008A
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US2362091A
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US2446736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |