US1221496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-obturating device for ships.
Assignee: Individual
•
Filing: 1916-09-19
•
Granted: 1917-04-03
•
Expires: 1936-09-19
Abstract
No abstract record available.
Inventors
- 👤 Frederic Wullyamoz
- 👤 Gustave Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
B; B63; B63B; B63B43/00; B63B43/02; B63B43/10; B63B43/16
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) | 1920-04-02 | 1920-10-02 | 1921-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-04-02 | 1924-10-02 | 1925-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-04-02 | 1928-10-02 | 1929-04-03 | $7700.00 | Window Closed / Lapsed |