US2806208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tube voltmeter
Assignee: CBS Broadcasting Inc
•
Filing: 1951-09-29
•
Granted: 1957-09-10
•
Expires: 1971-09-29
Abstract
No abstract record available.
Inventors
- 👤 Giuffrida Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:28
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/10; G01R17/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1899580A
Cited
US1924469A
Cited
US2099349A
Cited
US2338342A
Cited
US2616988A
Cited
US2611021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |