US2512908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone switchboard mounting plate with plug-in components
Assignee: Stromberg Carlson Corp
•
Filing: 1947-10-16
•
Granted: 1950-06-27
•
Expires: 1967-10-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:59
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/02; H04Q1/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB253329A
Cited
GB314660A
Cited
US1809025A
Cited
US1886296A
Cited
US1881503A
Cited
US1882854A
Cited
US2436786A
Cited
US2447572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |