Patent US3025512A successfully refreshed from Google Patents.
US3025512A
Expired / Lapsed
US
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Changeable indicators for display devices
Assignee: SPX Technologies Inc
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Filing: 1959-07-01
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Granted: 1962-03-13
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Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Ludwig J Bloechl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:11
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/24; G08B5/30; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/375
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1850175A
Cited
US2047632A
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US2415452A
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US2632888A
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US2585974A
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GB687604A
Cited
US2740955A
Cited
US2836773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |