US2616982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recorder
Assignee: Raytheon Co
•
Filing: 1946-08-24
•
Granted: 1952-11-04
•
Expires: 1966-08-24
Abstract
No abstract record available.
Inventors
- 👤 Gray Robert
- 👤 Ellis Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:22
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1123147A
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US1237496A
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DE375749C
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GB297327A
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US2005596A
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US2213631A
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US2321812A
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US2364556A
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US2419476A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |