US2985341A
Expired / Lapsed
US
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Reactor catalyst loader
Assignee: JAMES H HOWARD
•
Filing: 1958-05-29
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Granted: 1961-05-23
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Expires: 1978-05-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:13
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J8/0015; B01J8/003; B01J2208/00; B01J2208/00743; B01J2208/00752
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |