Patent US3446388A successfully refreshed from Google Patents.
US3446388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic tank support means
Assignee: Ryan Industries Inc
•
Filing: 1966-04-15
•
Granted: 1969-05-27
•
Expires: 1986-04-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:58
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/08; F17C13/086; F17C2203/00; F17C2203/01; F17C2203/014; F17C2203/015
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1607071A
Cited
US2184336A
Cited
US2256673A
Cited
US2858136A
Cited
US2823822A
Cited
US2900800A
Cited
US2874865A
Cited
US2925934A
Cited
US2992622A
Cited
US3037657A
Cited
US3191795A
Cited
US3208622A
Cited
US3163313A
Cited
US3331525A
Cited
US3339782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |