US2487970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp switch
Assignee: WHEELER INSULATED WIRE Co
•
Filing: 1947-08-18
•
Granted: 1949-11-15
•
Expires: 1967-08-18
Abstract
No abstract record available.
Inventors
- 👤 George B Horn
- 👤 Howard E Youngs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:36
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1047245A
Cited
US1287425A
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US1399129A
Cited
US1518041A
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US2041685A
Cited
US2228523A
Cited
US2299250A
Cited
US2416569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |