US2970283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadband switching junction
Assignee: Individual
•
Filing: 1956-11-26
•
Granted: 1961-01-31
•
Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 John W E Griemsmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:36
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2531437A
Cited
US2438367A
Cited
US2496865A
Cited
US2643296A
Cited
US2790959A
Cited
US2816270A
Cited
US2801390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |