Patent US2938949A successfully refreshed from Google Patents.
US2938949A
Expired / Lapsed
US
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Electronic marker generator
Assignee: TDK Micronas GmbH
•
Filing: 1957-05-09
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Granted: 1960-05-31
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Expires: 1977-05-09
Abstract
No abstract record available.
Inventors
- 👤 Malcolm C Vosburgh
- 👤 Baum Elmer
- 👤 Sylvester A Demars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/22; H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/278
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2522528A
Cited
US2513490A
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US2636166A
Cited
US2622240A
Cited
US2540943A
Cited
GB750628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |