US2681977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting arrangement for instruments
Assignee: General Electric Co
•
Filing: 1950-12-18
•
Granted: 1954-06-22
•
Expires: 1970-12-18
Abstract
No abstract record available.
Inventors
- 👤 Robert G Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/28; Y; Y10; Y10S; Y10S116/00; Y10S116/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1159419A
Cited
US1533615A
Cited
US1814669A
Cited
US2191379A
Cited
US2290284A
Cited
US2262920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |