US2577368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television receiving apparatus
Assignee: CHARLES DOERR
•
Filing: 1950-02-14
•
Granted: 1951-12-04
•
Expires: 1970-02-14
Abstract
No abstract record available.
Inventors
- 👤 Mortimer L Schultz
- 👤 Louis G Pacent
- 👤 Ralph R Batcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2307188A
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US2296908A
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US2319789A
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US2416056A
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US2431115A
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US2415059A
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US2461515A
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US2490812A
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US2446249A
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US2446791A
Cited
US2544690A
Cited
US2446440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |