US3479222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of cleaning memory discs
Assignee: Disc Pack Corp
•
Filing: 1966-06-22
•
Granted: 1969-11-18
•
Expires: 1986-06-22
Abstract
No abstract record available.
Inventors
- 👤 Charles W David
- 👤 Eugene A Munson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:56
CPC Classifications
B; B08; B08B; B08B11/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1753176A
Cited
US2629343A
Cited
US2837759A
Cited
US2976551A
Cited
US3060477A
Cited
US3005223A
Cited
US3077622A
Cited
US3108299A
Cited
US3150401A
Cited
US3345075A
Cited
US3327721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |