Patent US2713249A successfully refreshed from Google Patents.
US2749480A
Expired / Lapsed
US
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Apparatus for producing threedimensional visual patterns
Assignee: Individual
•
Filing: 1952-11-24
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Granted: 1956-06-05
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Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Ruderfer Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:03
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/206; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G2300/00; G09G2300/02; G09G2300/023
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |