Patent DE879590C successfully refreshed from Google Patents.
US3038069A
Expired / Lapsed
US
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Spectrum analyzers
Assignee: Melpar Inc
•
Filing: 1949-06-24
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Granted: 1962-06-05
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Expires: 1969-06-24
Abstract
No abstract record available.
Inventors
- 👤 William G Tuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1921; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315539A
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US2099536A
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US2410233A
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US2416895A
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US2465355A
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US2444445A
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US2491189A
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US2492062A
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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) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |