US2644056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fused, polarized, blade-type electrical coupling
Assignee: F H SMITH MANUFACTURING Co
•
Filing: 1950-04-29
•
Granted: 1953-06-30
•
Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence R Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:00
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/68
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1180648A
Cited
US1731039A
Cited
FR674960A
Cited
US1942178A
Cited
US1990176A
Cited
US1974700A
Cited
US2176793A
Cited
US2201427A
Cited
US2289172A
Cited
US2496413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |