Patent US3132972A successfully refreshed from Google Patents.
US2962584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in or relating to switching devices for signal transceivers
Assignee: NORMAN IND Inc VAN
•
Filing: 1957-03-07
•
Granted: 1960-11-29
•
Expires: 1977-03-07
Abstract
No abstract record available.
Inventors
- 👤 Samuel K Lackoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:12
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/034
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE733781C
Cited
US2277731A
Cited
US2807713A
Cited
US2691775A
Cited
US2654834A
Cited
US2835867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |