Patent US2725552A successfully refreshed from Google Patents.
US2725552A
Expired / Lapsed
US
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Control panel display system
Assignee: Westinghouse Electric Corp
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Filing: 1951-07-28
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Granted: 1955-11-29
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Expires: 1971-07-28
Abstract
No abstract record available.
Inventors
- 👤 Merritt A Hyde
- 👤 James P Houck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:29
CPC Classifications
H; H02; H02B; H02B15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US831404A
Cited
US1408611A
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CH150824A
Cited
GB411770A
Cited
US2094134A
Cited
US2305185A
Cited
CH215260A
Cited
US2359110A
Cited
US2496853A
Cited
US2507921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |