US2561885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated dial
Assignee: General Electric Co
•
Filing: 1945-05-31
•
Granted: 1951-07-24
•
Expires: 1965-05-31
Abstract
No abstract record available.
Inventors
- 👤 Gwilym F Prideaux
- 👤 Robert L Oetting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:04
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1146361A
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US1445306A
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US1646763A
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FR587766A
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FR31104E
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US1739954A
Cited
CH194866A
Cited
US2072454A
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US2347665A
Cited
US2448244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |