US2685049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coincidence circuit
Assignee: International Business Machines Corp
•
Filing: 1951-10-31
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Granted: 1954-07-27
•
Expires: 1971-10-31
Abstract
No abstract record available.
Inventors
- 👤 Richard K Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:47
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/52; H03K19/00; H03K19/02; H03K19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |