US2564328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead mounting for tubular lighting fixtures
Assignee: THOMPSON ELECTRIC CO
•
Filing: 1945-04-23
•
Granted: 1951-08-14
•
Expires: 1965-04-23
Abstract
No abstract record available.
Inventors
- 👤 Thayer B Farrington
- 👤 Wade T Keller
- 👤 Harold L Dalzell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/36; F21V21/38; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1051; Y10T292/1052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US261262A
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US1552654A
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US1559669A
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US1617028A
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US2290143A
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US2268731A
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US2287565A
Cited
US2291490A
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US2377872A
Cited
US2439885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |