Patent US2995992A successfully refreshed from Google Patents.
US2995992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zenith camera system
Assignee: PHOTOGRAMMETRY Inc
•
Filing: 1958-07-29
•
Granted: 1961-08-15
•
Expires: 1978-07-29
Abstract
No abstract record available.
Inventors
- 👤 Everett L Merritt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:33
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/14; G02; G02B; G02B23/00; G02B23/02; G02B23/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2384666A
Cited
US2862428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |