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US2879129A
Expired / Lapsed
US
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Recording electrode
Assignee: Individual
•
Filing: 1953-03-19
•
Granted: 1959-03-24
•
Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 Alden Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:22
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR702216A
Cited
US2366383A
Cited
US2278919A
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US2464970A
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US2613124A
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US2597199A
Cited
US2557196A
Cited
US2643173A
Cited
US2633405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |