US1685672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic apparatus
Assignee: Selden Co
•
Filing: 1926-10-27
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Granted: 1928-09-25
•
Expires: 1946-10-27
Abstract
No abstract record available.
Inventors
- 👤 Alphons O Jaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:04
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0411; B; B01; B01J; B01J8/00; B01J8/02; B01J8/0285; C01C1/0417; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00123; B01J2208/00132; 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) | 1931-09-25 | 1932-03-26 | 1932-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-25 | 1936-03-26 | 1936-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-25 | 1940-03-26 | 1940-09-25 | $7700.00 | Window Closed / Lapsed |