US1169764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of gas-washing.
Assignee: Individual
•
Filing: 1915-06-28
•
Granted: 1916-02-01
•
Expires: 1935-06-28
Abstract
No abstract record available.
Inventors
- 👤 Hermann A Brassert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:26
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; Y; Y10; Y10S; Y10S261/00; Y10S261/45
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) | 1919-01-31 | 1919-08-02 | 1920-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-01-31 | 1923-08-02 | 1924-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-01-31 | 1927-08-02 | 1928-02-01 | $7700.00 | Window Closed / Lapsed |