US2424773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locating device
Assignee: INTERVAL INSTR Inc
•
Filing: 1944-02-26
•
Granted: 1947-07-29
•
Expires: 1964-02-26
Abstract
No abstract record available.
Inventors
- 👤 Rieber Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:53
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/362; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US964380A
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US1378960A
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US1470733A
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US1645810A
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US1729595A
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US1977974A
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DE704700C
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US2166991A
Cited
US2275735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |