US2698928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferro-electric carrier, particularly tape recording and reproducing system
Assignee: Individual
•
Filing: 1951-01-24
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Granted: 1955-01-04
•
Expires: 1971-01-24
Abstract
No abstract record available.
Inventors
- 👤 Charles F Pulvari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:57
CPC Classifications
G; G11; G11B; G11B9/00; G06; G06K; G06K1/00; G06K1/12; G06K1/128; G06K19/00; G06K19/02; G06K7/00; G06K7/08; G06K7/081; G11B11/00; G11B13/00; G11B9/02; G11B9/08; G11C; G11C13/00; G11C13/04; G11C13/047
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) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |