US2631489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monochromator
Assignee: Individual
•
Filing: 1949-01-12
•
Granted: 1953-03-17
•
Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Marcel J E Golay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/14; G01J3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377322A
Cited
GB348090A
Cited
US2078768A
Cited
US2039355A
Cited
US2227510A
Cited
US2312010A
Cited
US2458973A
Cited
US2442298A
Cited
US2451572A
Cited
US2462946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |