US2867912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the decontamination of metal foils
Assignee: Individual
•
Filing: 1956-05-11
•
Granted: 1959-01-13
•
Expires: 1976-05-11
Abstract
No abstract record available.
Inventors
- 👤 Mathew F Kritchever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
B; B21; B21B; B21B45/00; B21B45/02; B21B45/0269; B21B45/0275; B21B45/0278; B21B45/0284; C; C23; C23G; C23G5/00
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |