Patent US2575339A successfully refreshed from Google Patents.
US2575339A
Expired / Lapsed
US
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Rubber dome for underwater sound
Assignee: Individual
•
Filing: 1945-01-16
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Granted: 1951-11-20
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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 02:13
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US768573A
Cited
US985167A
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GB126298A
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US1345717A
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US1545328A
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US2116106A
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US1994495A
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US2108722A
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US2218351A
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US2212373A
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US2460274A
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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 |