US2155331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety apparatus for divers
Assignee: Individual
•
Filing: 1938-12-16
•
Granted: 1939-04-18
•
Expires: 1958-12-16
Abstract
No abstract record available.
Inventors
- 👤 Stanley P Sadloski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:46
CPC Classifications
F; F41; F41H; F41H13/00; F41H13/0012; F41H13/0018; B; B63; B63C; B63C9/00; B63C2009/0088; B63C11/00; B63C11/02; B63C11/04; B63C2011/043
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) | 1942-04-17 | 1942-10-17 | 1943-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-17 | 1946-10-17 | 1947-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-17 | 1950-10-17 | 1951-04-18 | $7700.00 | Window Closed / Lapsed |