US2424030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced driver for sonic depth finders
Assignee: Individual
•
Filing: 1932-01-30
•
Granted: 1947-07-15
•
Expires: 1952-01-30
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:31
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72; Y; Y10; Y10S; Y10S367/00; Y10S367/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US942897A
Cited
US1076312A
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GB145691A
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US2248870A
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GB174354A
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US1691719A
Cited
US1858931A
Cited
US1632331A
Cited
US1972889A
Cited
US2098266A
Cited
US2025041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |