US2962636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic filter
Assignee: Applied Biosystems Inc
•
Filing: 1955-07-22
•
Granted: 1960-11-29
•
Expires: 1975-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edward M Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:33
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA492901A
Cited
US1121859A
Cited
US1974079A
Cited
US2161977A
Cited
US2283925A
Cited
US2390863A
Cited
US2394070A
Cited
GB559526A
Cited
US2664527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |