US2784385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety electric coupling
Assignee: Individual
•
Filing: 1954-02-02
•
Granted: 1957-03-05
•
Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harlan M Ennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/621
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US819702A
Cited
US1269532A
Cited
US1958344A
Cited
GB616335A
Cited
US2443975A
Cited
US2513080A
Cited
US2491406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |