US2456818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic trigger circuit with pulse output attenuating means
Assignee: International Business Machines Corp
•
Filing: 1945-03-17
•
Granted: 1948-12-21
•
Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:13
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K23/00; H03K23/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2266401A
Cited
US2266526A
Cited
US2272070A
Cited
US2338395A
Cited
US2402916A
Cited
US2373145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |