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US2572912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity system
Assignee: RCA Corp
•
Filing: 1948-03-01
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Granted: 1951-10-30
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Expires: 1968-03-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas T N Bucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:40
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0802
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2269594A
Cited
US2293565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |