US2619633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for producing multiple tone effect in cathode-ray tube indications
Assignee: Individual
•
Filing: 1948-02-12
•
Granted: 1952-11-25
•
Expires: 1968-02-12
Abstract
No abstract record available.
Inventors
- 👤 William R Boario
- 👤 Dale E Oyster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:24
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2449985A
Cited
US2419620A
Cited
US2453711A
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US2435960A
Cited
US2403527A
Cited
US2446244A
Cited
US2401432A
Cited
US2483187A
Cited
US2502454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |