Patent US5089784A successfully refreshed from Google Patents.
Patent US2998536A successfully refreshed from Google Patents.
US2998536A
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Electromagnetic pick-up apparatus for the reception of oscillations
Assignee: Vyzkumny A Zkusebni Letecky Ustav AS
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Filing: 1957-09-26
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Granted: 1961-08-29
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Expires: 1977-09-26
Abstract
No abstract record available.
Inventors
- 👤 Dubsky Borivoj
- 👤 Straka Oldrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:21
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/04; B06B1/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |