US3464133A
Expired / Lapsed
US
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Display apparatus
Assignee: MARCEL C K DE PORAY
•
Filing: 1965-10-20
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Granted: 1969-09-02
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Marcel C K De Poray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:03
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0033; G02B6/0035; G02B6/0045; G02B6/0046; G02B6/005; G02B6/0066; G02B6/0068; G09; G09F; G09F13/00; G09F13/18; G09F2013/1804; G09F2013/1827; G09F2013/1831; G09F2013/1836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2560392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |