US1683756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stuffing box for propeller shafts
Assignee: Individual
•
Filing: 1926-05-18
•
Granted: 1928-09-11
•
Expires: 1946-05-18
Abstract
No abstract record available.
Inventors
- 👤 Blache Hans Henrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/44; F16J15/445; F16J15/16; F16J15/34; F16J15/3404; F16J15/3408; F16J15/3412
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) | 1931-09-11 | 1932-03-12 | 1932-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-11 | 1936-03-12 | 1936-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-11 | 1940-03-12 | 1940-09-11 | $7700.00 | Window Closed / Lapsed |