US1618265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic apparatus
Assignee: —
•
Filing: —
•
Granted: 1927-02-22
•
Expires: 1944-02-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0285; B01J8/0005; C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0417; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-02-21 | 1930-08-23 | 1931-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-02-21 | 1934-08-23 | 1935-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-02-21 | 1938-08-23 | 1939-02-22 | $7700.00 | Window Closed / Lapsed |