Patent US3778077A successfully refreshed from Google Patents.
Patent US2059417A successfully refreshed from Google Patents.
US2059417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant level apparatus
Assignee: Individual
•
Filing: 1934-11-14
•
Granted: 1936-11-03
•
Expires: 1954-11-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:52
CPC Classifications
B; B05; B05C; B05C3/00; B05C3/02; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1789; Y10T137/6851; Y10T137/7039; Y10T137/7287; Y10T137/7498; Y10T137/8593; Y10T137/85954; Y10T137/87265
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) | 1939-11-03 | 1940-05-04 | 1940-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-03 | 1944-05-04 | 1944-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-03 | 1948-05-04 | 1948-11-03 | $7700.00 | Window Closed / Lapsed |