US2534568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submarine mask
Assignee: Pirelli and C SpA
•
Filing: 1947-08-27
•
Granted: 1950-12-19
•
Expires: 1967-08-27
Abstract
No abstract record available.
Inventors
- 👤 Bedini Nerino
- 👤 Vesigna Roscild
- 👤 Giuliani Pasquale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:05
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/12; B63C11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324514A
Cited
US1395948A
Cited
US1946126A
Cited
US2317236A
Cited
US2362240A
Cited
US2408166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |