US2534637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sussin
Assignee: —
•
Filing: —
•
Granted: 1950-12-19
•
Expires: 1967-12-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1988654A
Cited
US1989803A
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US2079373A
Cited
US1500867A
Cited
US1576557A
Cited
US2012940A
Cited
US1846533A
Cited
US768827A
Cited
US1000231A
Cited
US1208387A
Cited
US1891498A
Cited
US1797322A
Cited
US2038784A
Cited
US2242525A
Cited
US2188294A
Cited
US2279084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |