US2855826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External filter support for underwater camera casings
Assignee: Individual
•
Filing: 1955-07-19
•
Granted: 1958-10-14
•
Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 David L Jayet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:43
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2396267A
Cited
US1481007A
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US1518141A
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US1710245A
Cited
US2088262A
Cited
US2256133A
Cited
US2358231A
Cited
US2481808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |