US2335864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonovision system
Assignee: Individual
•
Filing: 1941-10-17
•
Granted: 1943-12-07
•
Expires: 1961-10-17
Abstract
No abstract record available.
Inventors
- 👤 Paul W Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:20
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/64; H01; H01J; H01J21/00; H01J21/20; H01J2893/00; H01J2893/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-12-06 | 1947-06-07 | 1947-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-06 | 1951-06-07 | 1951-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-06 | 1955-06-07 | 1955-12-07 | $7700.00 | Window Closed / Lapsed |