US2789259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitors
Assignee: TECHNOGRAPH PRINTED CIRCUITS L
•
Filing: 1953-01-29
•
Granted: 1957-04-16
•
Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Eisler Paul
- 👤 Hauser Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/38; H01G5/01; H01G5/011; H01G5/04; H01G5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1551661A
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US1623741A
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US1756512A
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GB258331A
Cited
US2081914A
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DE624457C
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DE641177C
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US2541749A
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US2581966A
Cited
US2591705A
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US2556453A
Cited
US2567280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |