Patent US2861718A successfully refreshed from Google Patents.
US2467208A
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Pulse echo system
Assignee: General Electric Co
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Filing: 1943-12-30
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Granted: 1949-04-12
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Expires: 1963-12-30
Abstract
No abstract record available.
Inventors
- 👤 William C Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03K3/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |