US2235255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting device
Assignee: National Telephone Supply Co
•
Filing: 1939-07-13
•
Granted: 1941-03-18
•
Expires: 1959-07-13
Abstract
No abstract record available.
Inventors
- 👤 Durant Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/10; Y; Y10; Y10S; Y10S16/00; Y10S16/41; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T403/00; Y10T403/49; Y10T403/57; Y10T403/5733
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-17 | 1944-09-16 | 1945-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-17 | 1948-09-16 | 1949-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-17 | 1952-09-16 | 1953-03-18 | $7700.00 | Window Closed / Lapsed |