US2571584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic transparency holder
Assignee: STEREOCRAFT ENGINEERING Co
•
Filing: 1948-04-24
•
Granted: 1951-10-16
•
Expires: 1968-04-24
Abstract
No abstract record available.
Inventors
- 👤 Karl F Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:32
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/10; G03B23/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US861418A
Cited
US1096873A
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US1634713A
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US1901245A
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US2149507A
Cited
US2189285A
Cited
US2266846A
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US2373392A
Cited
US2446038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |