US2424976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for detecting sources of radiant energy
Assignee: Individual
•
Filing: 1939-06-12
•
Granted: 1947-08-05
•
Expires: 1959-06-12
Abstract
No abstract record available.
Inventors
- 👤 Marcel J E Golay
- 👤 Harold A Zahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/38; G01J5/42; G02; G02B; G02B23/00; G02B23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1862622A
Cited
US1936514A
Cited
US1954204A
Cited
US2121771A
Cited
US2074226A
Cited
US2115578A
Cited
US2144519A
Cited
US2188115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |