Patent US2483281A successfully refreshed from Google Patents.
US2483281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching system
Assignee: CONTROL INSTR CO Inc
•
Filing: 1947-09-17
•
Granted: 1949-09-27
•
Expires: 1967-09-17
Abstract
No abstract record available.
Inventors
- 👤 Donald L Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:08
CPC Classifications
H; H04; H04Q; H04Q9/00; H04Q9/04; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1702423A
Cited
US1765538A
Cited
US1969369A
Cited
US1973539A
Cited
US2046381A
Cited
US2088942A
Cited
US2087674A
Cited
US2147656A
Cited
US2183022A
Cited
US2356083A
Cited
US2361229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-26 | 1953-03-28 | 1953-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-26 | 1957-03-28 | 1957-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-26 | 1961-03-28 | 1961-09-27 | $7700.00 | Window Closed / Lapsed |