US2498581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible and retractable shield for camera lenses and filters
Assignee: Individual
•
Filing: 1947-03-11
•
Granted: 1950-02-21
•
Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:44
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848879A
Cited
GB190720706A
Cited
GB191325036A
Cited
US1283963A
Cited
US1971434A
Cited
US2093237A
Cited
US2143125A
Cited
US2197184A
Cited
US2241596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |