US2423924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube
Assignee: SPEIDEL Corp
•
Filing: 1943-07-15
•
Granted: 1947-07-15
•
Expires: 1963-07-15
Abstract
No abstract record available.
Inventors
- 👤 Karl C Augenstein
- 👤 Rieth Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:31
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536855A
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GB173363A
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US2058293A
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US2163233A
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US2164951A
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US2227087A
Cited
US2219111A
Cited
US2175707A
Cited
US2284547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |