Patent US3453553A successfully refreshed from Google Patents.
US3453553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two transistor resonant circuit employing series diode compensation
Assignee: US Philips Corp
•
Filing: 1965-10-06
•
Granted: 1969-07-01
•
Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Johannes Wil Overbeek
- 👤 Wilhelmus Antonius Jos Zwijsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:38
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1638; H03; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1206; H03B5/1212; H03B5/1215; H03B5/1231; H03B5/1237; H03B5/124; H03B5/1243; H03B5/1271; H03B5/20; H03B5/24; H03F; H03F1/00; H03F1/30; H03F1/302; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047; H03H; H03H11/00; H03H11/46; H03J; H03J3/00; H03J3/02; H03J3/16; H03J3/18; H03J3/185; H04B1/163
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3239778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |