US2669034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording method
Assignee: Individual
•
Filing: 1949-07-30
•
Granted: 1954-02-16
•
Expires: 1969-07-30
Abstract
No abstract record available.
Inventors
- 👤 Peter A Luppen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1815251A
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US2183524A
Cited
US2206206A
Cited
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Cited
US2203000A
Cited
US2291683A
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US2309390A
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US2352413A
Cited
US2474828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |