US2654173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1946-10-31
•
Granted: 1953-10-06
•
Expires: 1966-10-31
Abstract
No abstract record available.
Inventors
- 👤 Christensen Christian
- 👤 Christensen Geneva Bandy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:49
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024; F; F21; F21V; F21V7/00; F21V7/10; F21V7/18; G03; G03B; G03B15/00; G03B15/02; G03B15/06; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315516A
Cited
US956916A
Cited
US1097009A
Cited
US1174914A
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US1769377A
Cited
GB304911A
Cited
US1754871A
Cited
FR774753A
Cited
US2027790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |