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US2607143A
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Changeable display sign
Assignee: Wagner Sign Service Inc
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Filing: 1949-07-09
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Granted: 1952-08-19
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Expires: 1969-07-09
Abstract
No abstract record available.
Inventors
- 👤 Wagner Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:30
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/06; G09F7/00; G09F7/02; G09F7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2114639A
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US2069368A
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US2113285A
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US2230873A
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US2313723A
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US2313724A
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US2527679A
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |