Patent US2795165A successfully refreshed from Google Patents.
US2795165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater viewers
Assignee: Individual
•
Filing: 1954-12-20
•
Granted: 1957-06-11
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 George E Vernier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:51
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/16; G02B23/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |