US2957137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarity coincidence correlator
Assignee: Individual
•
Filing: 1957-06-24
•
Granted: 1960-10-18
•
Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Aaron Z Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:08
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2250708A
Cited
US2287174A
Cited
US2370692A
Cited
US2627039A
Cited
US2718613A
Cited
US2806153A
Cited
US2750559A
Cited
US2757286A
Cited
US2820143A
Cited
US2859347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |