US2565265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized electrooptical system
Assignee: Dow Chemical Co
•
Filing: 1949-06-30
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Granted: 1951-08-21
•
Expires: 1969-06-30
Abstract
No abstract record available.
Inventors
- 👤 Eugene W Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:49
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/30; H05; H05B; H05B39/00; H05B39/04; H05B39/041; H05B39/042; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2198233A
Cited
US2412423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |