US2840632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode spot television receiving system
Assignee: Individual
•
Filing: 1952-06-02
•
Granted: 1958-06-24
•
Expires: 1972-06-02
Abstract
No abstract record available.
Inventors
- 👤 Henry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/02; H04N3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE16789E
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US1654951A
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US2002551A
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US2036622A
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US2187908A
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US2163548A
Cited
US2201003A
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US2222937A
Cited
US2190308A
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US2206710A
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US2453118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |