Patent EP0050591A1 successfully refreshed from Google Patents.
Patent US2779811A successfully refreshed from Google Patents.
US2779811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-cell construction
Assignee: Vitro Corp of America
•
Filing: 1952-04-21
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Granted: 1957-01-29
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Expires: 1972-04-21
Abstract
No abstract record available.
Inventors
- 👤 Michael A Picciano
- 👤 Ekstein Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
H; H10; H10F; H10F30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1266473A
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US1345586A
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US1647652A
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US1697451A
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US2055017A
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US2030187A
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US2582850A
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US2586609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |