Patent US2619906A successfully refreshed from Google Patents.
US2619906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level control mechanism
Assignee: Individual
•
Filing: 1944-09-07
•
Granted: 1952-12-02
•
Expires: 1964-09-07
Abstract
No abstract record available.
Inventors
- 👤 Allen J Gardenhour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:30
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339; Y10T137/7349; Y10T137/7352
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US308979A
Cited
US639633A
Cited
US1065226A
Cited
US1129334A
Cited
US1467802A
Cited
US1502127A
Cited
US1511432A
Cited
US1667270A
Cited
US1880597A
Cited
FR669368A
Cited
US1924907A
Cited
US2011608A
Cited
US2072425A
Cited
US1987466A
Cited
US2100874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |