US2843030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereocameras
Assignee: Graflex Inc
•
Filing: 1954-05-13
•
Granted: 1958-07-15
•
Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Perlin Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/08; G03B35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US694364A
Cited
US2194284A
Cited
US2402149A
Cited
US2522214A
Cited
US2476576A
Cited
US2515272A
Cited
US2608920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |