Patent US2997621A successfully refreshed from Google Patents.
US2997621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image display device
Assignee: Motorola Solutions Inc
•
Filing: 1956-04-04
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Granted: 1961-08-22
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Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Schlesinger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:51
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2332876A
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US2464562A
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US2449558A
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US2728025A
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US2760096A
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US2777084A
Cited
US2795729A
Cited
US2795731A
Cited
US2850669A
Cited
US2809324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |