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US2917733A
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Assignee: American Sign and Indicator Corp
•
Filing: 1955-12-27
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Granted: 1959-12-15
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 William H Justus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:44
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/307
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US883992A
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US1795536A
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US1911949A
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GB359539A
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US1972941A
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US2207743A
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US2290261A
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GB528624A
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US2673976A
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US2745243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |