US2864000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for comparing the instan-
Assignee: —
•
Filing: —
•
Granted: 1958-12-09
•
Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:23
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; H03K5/2472; H03K5/2481
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2443864A
Cited
US2676286A
Cited
US2640883A
Cited
US2683214A
Cited
US2620400A
Cited
US2773255A
Cited
US2682638A
Cited
US2789216A
Cited
US2753451A
Cited
US2684443A
Cited
US2744955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |