US1414441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Becoveby of pybidine fbom ammonium sttlphate solutions
Assignee: —
•
Filing: —
•
Granted: 1922-05-02
•
Expires: 1939-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16
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) | 1925-05-01 | 1925-10-31 | 1926-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-05-01 | 1929-10-31 | 1930-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-05-01 | 1933-10-31 | 1934-05-02 | $7700.00 | Window Closed / Lapsed |