Patent US2927972A successfully refreshed from Google Patents.
US2927972A
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US
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Reeling systems
Assignee: RCA Corp
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Filing: 1952-10-29
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Granted: 1960-03-08
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Expires: 1972-10-29
Abstract
No abstract record available.
Inventors
- 👤 Valle Guillermo A Del
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B15/00; G11B15/18; G11B15/26; G11B15/34; G11B15/60; G11B15/61; G11B5/488; G11B5/4893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |