US2917838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated writing panel
Assignee: Individual
•
Filing: 1955-03-10
•
Granted: 1959-12-22
•
Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Neugass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:24
CPC Classifications
B; B43; B43L; B43L1/00; B43L1/004; B43L1/12; B43L1/123; B43L1/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1543430A
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GB343742A
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US1839287A
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US1931742A
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US1816220A
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US1843980A
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US2027034A
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US2223409A
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US2202682A
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US2451979A
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US2697884A
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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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |