Patent US3729252A successfully refreshed from Google Patents.
Patent US3040438A successfully refreshed from Google Patents.
US3040438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solids fluidizing vessel and gas diffuser plate and nozzle elements therefor
Assignee: General American Transportation Corp
•
Filing: 1959-04-27
•
Granted: 1962-06-26
•
Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Perlman Raymond
- 👤 Jr Frank W Horner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:11
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F26B3/082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190920550A
Cited
US2061830A
Cited
NL83890C
Cited
US2712962A
Cited
US2856264A
Cited
GB796753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |