US2018917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bucket pressure unloader
Assignee: LIPMAN PATENTS Corp
•
Filing: 1931-03-09
•
Granted: 1935-10-29
•
Expires: 1951-03-09
Abstract
No abstract record available.
Inventors
- 👤 Carl E L Lipman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:35
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02; F25B2600/00; F25B2600/02; F25B2600/026; F25B2600/0262; F25B31/002; F25B31/006; Y; Y10; Y10S; Y10S417/00; Y10S417/902
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) | 1938-10-28 | 1939-04-29 | 1939-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-28 | 1943-04-29 | 1943-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-28 | 1947-04-29 | 1947-10-29 | $7700.00 | Window Closed / Lapsed |