US2590513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated light-responsive lampchanging mechanism for lighting units
Assignee: Crouse Hinds Co
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Filing: 1947-02-19
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Granted: 1952-03-25
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Expires: 1967-02-19
Abstract
No abstract record available.
Inventors
- 👤 Royal E Crossley
- 👤 Harlow M Pattat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:25
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/04; F21V29/00; F21V29/50; F21V29/502; F21V29/503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1266678A
Cited
US1462057A
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US1700226A
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US1864436A
Cited
US2113273A
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US2091820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |