US2808562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope delay measuring equipment
Assignee: RCA Corp
•
Filing: 1954-11-26
•
Granted: 1957-10-01
•
Expires: 1974-11-26
Abstract
No abstract record available.
Inventors
- 👤 French Hubert
- 👤 Kennedy Ralph Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:46
CPC Classifications
H; H04; H04N; H04N17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2416310A
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US2483262A
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US2442317A
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US2525448A
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US2695962A
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US2651722A
Cited
US2672588A
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US2685062A
Cited
US2700133A
Cited
US2767373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |