Patent US2482151A successfully refreshed from Google Patents.
US2482151A
Expired / Lapsed
US
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Cathode-ray projection tube
Assignee: Philips Laboratories Inc
•
Filing: 1944-08-18
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Granted: 1949-09-20
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Expires: 1964-08-18
Abstract
No abstract record available.
Inventors
- 👤 Homer G Boyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:08
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/894
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2049781A
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US2053537A
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US2166399A
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GB487241A
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US2283041A
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US2292979A
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US2295779A
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US2298808A
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US2305855A
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GB557771A
Cited
US2440735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |