US2853609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multivibrator hold off circuit
Assignee: Tektronix Inc
•
Filing: 1955-02-21
•
Granted: 1958-09-23
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Richard L Ropiequet
- 👤 John R Kobbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:09
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12; H03K4/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2636984A
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US2399135A
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US2515271A
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US2562295A
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US2688079A
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US2557770A
Cited
US2545082A
Cited
US2577475A
Cited
US2748272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |