US2505265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving-coil system without core for a luxmeter comprising a selenium cell
Assignee: Hartford National Bank and Trust Co
•
Filing: 1945-09-21
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Granted: 1950-04-25
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Expires: 1965-09-21
Abstract
No abstract record available.
Inventors
- 👤 Arend Thomas Van Urk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:18
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/02; G01R5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB518919A
Cited
US2332877A
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US1118678A
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US1379166A
Cited
US1932911A
Cited
US2044789A
Cited
US2346529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |