US2575339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber dome for underwater sound
Assignee: Individual
•
Filing: 1945-01-16
•
Granted: 1951-11-20
•
Expires: 1965-01-16
Abstract
No abstract record available.
Inventors
- 👤 James W Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:24
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US768573A
Cited
US985167A
Cited
GB126298A
Cited
US1345717A
Cited
US1545328A
Cited
US2116106A
Cited
US1994495A
Cited
US2108722A
Cited
US2218351A
Cited
US2212373A
Cited
US2460274A
Cited
US2417829A
Cited
US2417830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |