US2469781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens holder for projector enlargers and cameras
Assignee: Individual
•
Filing: 1948-01-16
•
Granted: 1949-05-10
•
Expires: 1968-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jerry M Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1417527A
Cited
US2061192A
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US2116704A
Cited
US2135074A
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US2254537A
Cited
US2303920A
Cited
US2381228A
Cited
US2411777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |