Patent US2881036A successfully refreshed from Google Patents.
Patent US2826642A successfully refreshed from Google Patents.
US2826642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eraser for magnetically recorded bulk tape in roll form
Assignee: SOUND SERIBER Corp
•
Filing: 1952-10-02
•
Granted: 1958-03-11
•
Expires: 1972-10-02
Abstract
No abstract record available.
Inventors
- 👤 William H Lyon
- 👤 Thompson Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; G11B5/024; G11B5/0245
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CH233606A
Cited
US2481392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |