US1717856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-relief plug
Assignee: Individual
•
Filing: 1928-05-23
•
Granted: 1929-06-18
•
Expires: 1948-05-23
Abstract
No abstract record available.
Inventors
- 👤 William C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:42
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/14; F01P11/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932; Y10T137/7933; Y10T137/7936
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) | 1932-06-17 | 1932-12-17 | 1933-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-06-17 | 1936-12-17 | 1937-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-06-17 | 1940-12-17 | 1941-06-18 | $7700.00 | Window Closed / Lapsed |