Patent US3189767A successfully refreshed from Google Patents.
Patent US1584613A successfully refreshed from Google Patents.
US1584613A
Expired / Lapsed
US
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Wave detector
Assignee: Kalmus Comstock & Wescott Inc
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Filing: 1920-02-25
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Granted: 1926-05-11
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Expires: 1940-02-25
Abstract
No abstract record available.
Inventors
- 👤 Daniel F Comstock
- 👤 Leonard T Troland
- 👤 Joseph A Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/12; G01L9/0001; G01L9/0002; G01L9/0004; G01L9/0005; G01S; G01S1/00; G01S1/72
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) | 1929-05-10 | 1929-11-09 | 1930-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-10 | 1933-11-09 | 1934-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-10 | 1937-11-09 | 1938-05-11 | $7700.00 | Window Closed / Lapsed |