US2617016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing circuit for decimeter and centimeter waves
Assignee: Hartford National Bank and Trust Co
•
Filing: 1948-12-22
•
Granted: 1952-11-04
•
Expires: 1968-12-22
Abstract
No abstract record available.
Inventors
- 👤 Knol Kornelis Swier
- 👤 Diemer Gesinus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:16
CPC Classifications
H; H03; H03D; H03D7/00; H03D7/22; H03D9/00; H03D9/06; H03D9/0608; H03D9/0625; H03K; H03K3/00; H03K3/02; H03K3/43; H03K5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |