US2777942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting unit
Assignee: Crouse Hinds Co
•
Filing: 1953-12-03
•
Granted: 1957-01-15
•
Expires: 1973-12-03
Abstract
No abstract record available.
Inventors
- 👤 Ray F Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:48
CPC Classifications
F; F21; F21S; F21S8/00; F21W; F21W2111/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1607512A
Cited
GB332040A
Cited
US1882745A
Cited
US1858994A
Cited
US2070195A
Cited
US2316835A
Cited
US2334579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |