US2518718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin-lens reflex camera
Assignee: Individual
•
Filing: 1948-10-13
•
Granted: 1950-08-15
•
Expires: 1968-10-13
Abstract
No abstract record available.
Inventors
- 👤 Rath Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:34
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US622574A
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DE596224C
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US781061A
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US834089A
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GB191200040A
Cited
US1121178A
Cited
US1528464A
Cited
US1833668A
Cited
GB384629A
Cited
DE669438C
Cited
US2173553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |