Patent US2523577A successfully refreshed from Google Patents.
US2523577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
La verdure
Assignee: —
•
Filing: —
•
Granted: 1950-09-26
•
Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:17
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/08; G01; G01C; G01C1/00; G01C1/08; G01C1/14; G01C1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2399676A
Cited
US649046A
Cited
US829121A
Cited
US1161995A
Cited
US1360735A
Cited
GB274912A
Cited
US2266741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |