US3491256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monostable multivibrator
Assignee: Magnuson Corp
•
Filing: 1966-11-07
•
Granted: 1970-01-20
•
Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Patrick M L Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2827574A
Cited
US2992640A
Cited
US3214602A
Cited
US3035188A
Cited
US3084266A
Cited
US3188489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |