US1731571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush valve
Assignee: Individual
•
Filing: 1927-01-17
•
Granted: 1929-10-15
•
Expires: 1947-01-17
Abstract
No abstract record available.
Inventors
- 👤 Heare Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:45
CPC Classifications
E; E03; E03D; E03D3/00; E03D3/02; E03D3/08
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) | 1932-10-14 | 1933-04-15 | 1933-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-10-14 | 1937-04-15 | 1937-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-10-14 | 1941-04-15 | 1941-10-15 | $7700.00 | Window Closed / Lapsed |