US2594698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novelty device in nature of viewing means
Assignee: Individual
•
Filing: 1949-09-06
•
Granted: 1952-04-29
•
Expires: 1969-09-06
Abstract
No abstract record available.
Inventors
- 👤 Emory M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:12
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/002; G02C; G02C7/00; G02C7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US301562A
Cited
FR570625A
Cited
FR29167E
Cited
US1691789A
Cited
US1905675A
Cited
US2123682A
Cited
US2396510A
Cited
US2535321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |