US2602886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light modulating device
Assignee: Individual
•
Filing: 1946-03-14
•
Granted: 1952-07-08
•
Expires: 1966-03-14
Abstract
No abstract record available.
Inventors
- 👤 Morris H Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:49
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1951578A
Cited
US1958696A
Cited
US1802441A
Cited
US1937754A
Cited
US1813681A
Cited
US1976120A
Cited
US2289075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |