US2492739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety connection and distribution box
Assignee: ELECTRIC RAILWAY EQUIPMENT Co
•
Filing: 1947-02-18
•
Granted: 1949-12-27
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Expires: 1967-02-18
Abstract
No abstract record available.
Inventors
- 👤 Clyde O Gallaher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:12
CPC Classifications
H; H02; H02B; H02B1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US459523A
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US1017110A
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US1453696A
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US1402297A
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US1992392A
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FR817924A
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US2280334A
Cited
US2317667A
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US2339496A
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US2422755A
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US2439708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |