US1352255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety-damper for oil-stills and the like
Assignee: Individual
•
Filing: 1920-05-11
•
Granted: 1920-09-07
•
Expires: 1940-05-11
Abstract
No abstract record available.
Inventors
- 👤 Emerson Victor Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:43
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/06; C10G9/08; B; B01; B01D; B01D3/00; B01D3/04; B01D3/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1923-09-07 | 1924-03-08 | 1924-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-09-07 | 1928-03-08 | 1928-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-09-07 | 1932-03-08 | 1932-09-07 | $7700.00 | Window Closed / Lapsed |