US2838864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical display device having polarizing means
Assignee: VISA MATIC CORP
•
Filing: 1953-08-12
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Granted: 1958-06-17
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Expires: 1973-08-12
Abstract
No abstract record available.
Inventors
- 👤 Guida Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:21
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2393969A
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US2393968A
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US2482410A
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US2511010A
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US2458437A
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US2558605A
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US2603129A
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US2494543A
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US2578420A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |