US3483980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold trap filter
Assignee: United States Atomic Energy Commission
•
Filing: 1967-01-25
•
Granted: 1969-12-16
•
Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 John T Cochran
- 👤 Gordon D Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:36
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/28; G21C19/30; G21C19/307; G21C19/31; G21C19/313; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2098102A
Cited
US2151538A
Cited
US2597217A
Cited
US2654482A
Cited
US2745552A
Cited
US2770368A
Cited
US2895613A
Cited
US2998138A
Cited
US3268077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |