Patent US1799591A successfully refreshed from Google Patents.
US1799591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evacuator
Assignee: Individual
•
Filing: 1930-05-08
•
Granted: 1931-04-07
•
Expires: 1950-05-08
Abstract
No abstract record available.
Inventors
- 👤 Kiefer Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/02; B67C3/16; B67C3/22; B67C3/26; B67C3/2634
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) | 1934-04-06 | 1934-10-06 | 1935-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-06 | 1938-10-06 | 1939-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-06 | 1942-10-06 | 1943-04-07 | $7700.00 | Window Closed / Lapsed |