US2523050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus used in
Assignee: —
•
Filing: —
•
Granted: 1950-09-19
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:53
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024; A; A61; A61B; A61B6/00; A61B6/08; G01; G01N; G01N23/00; G01N23/02; G01N23/04; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB353426A
Cited
US1311995A
Cited
US1553229A
Cited
GB190013199A
Cited
CH56864A
Cited
GB191423236A
Cited
US2043729A
Cited
US2118773A
Cited
US2268632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |