US2738708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope-illumination device
Assignee: SCOPICON Inc
•
Filing: 1952-06-28
•
Granted: 1956-03-20
•
Expires: 1972-06-28
Abstract
No abstract record available.
Inventors
- 👤 Rosin Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:11
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/06; G02B21/08; G02B21/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1269496A
Cited
US1758049A
Cited
US1953299A
Cited
US2193422A
Cited
GB475776A
Cited
US2180031A
Cited
US2345602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |