Patent US2589677A successfully refreshed from Google Patents.
US2589677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Socket for elongated tubular lamps
Assignee: Hanovia Chemical and Manufacturing Co
•
Filing: 1950-06-03
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Granted: 1952-03-18
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Expires: 1970-06-03
Abstract
No abstract record available.
Inventors
- 👤 Harold E Darney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:41
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1746650A
Cited
US2045229A
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FR835032A
Cited
US2356601A
Cited
US2447676A
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US2472977A
Cited
US2475352A
Cited
US2495196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |