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US3537661A
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US
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Pressure roller construction
Assignee: RCA Corp
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Filing: 1968-07-17
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Granted: 1970-11-03
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Expires: 1988-07-17
Abstract
No abstract record available.
Inventors
- 👤 Warren R Isom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:05
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/29; G11B23/00; G11B23/02; G11B23/04; G11B23/06; G11B23/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2263439A
Cited
US3446410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |