US2183677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water control for flush tanks
Assignee: Individual
•
Filing: 1939-09-02
•
Granted: 1939-12-19
•
Expires: 1959-09-02
Abstract
No abstract record available.
Inventors
- 👤 Frank M Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:39
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/02; E03D5/026; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7462; Y10T137/8593; Y10T137/86348; Y10T137/86372; Y10T137/877; Y10T137/87788; Y10T137/87812; Y10T137/8807
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) | 1942-12-18 | 1943-06-19 | 1943-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-18 | 1947-06-19 | 1947-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-18 | 1951-06-19 | 1951-12-19 | $7700.00 | Window Closed / Lapsed |