US772434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge-valve for tanks.
Assignee: WALTER E TIFFIN
•
Filing: 1904-01-09
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Granted: 1904-10-18
•
Expires: 1924-01-09
Abstract
No abstract record available.
Inventors
- 👤 Charles W Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:38
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; Y; Y10; Y10S; Y10S137/00; Y10S137/906; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307
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) | 1907-10-18 | 1908-04-18 | 1908-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-10-18 | 1912-04-18 | 1912-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-10-18 | 1916-04-18 | 1916-10-18 | $7700.00 | Window Closed / Lapsed |