Patent EP0407244A1 successfully refreshed from Google Patents.
US2032893A
Expired / Lapsed
US
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Arrangement for the direct indication of time periods, especially for echo sounding
Assignee: ECHOMETER GmbH
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Filing: 1931-05-02
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Granted: 1936-03-03
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Expires: 1951-05-02
Abstract
No abstract record available.
Inventors
- 👤 Settegast Bernhard
- 👤 Rudolph Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:30
CPC Classifications
G; G04; G04F; G04F8/00; G04F8/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-03-03 | 1939-09-02 | 1940-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-03 | 1943-09-02 | 1944-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-03 | 1947-09-02 | 1948-03-03 | $7700.00 | Window Closed / Lapsed |