Patent US3146398A successfully refreshed from Google Patents.
US3146398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stage frequency conversion transmitter adapted for tuning within an extended frequency range
Assignee: Siemens and Halske AG
•
Filing: 1960-06-03
•
Granted: 1964-08-25
•
Expires: 1980-06-03
Abstract
No abstract record available.
Inventors
- 👤 Schnadelbach Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A MULTI-STAGE TRANSMITTER FOR VERY SHORT ELECTROMAGNETIC WAVES OPERATING WITH FREQUENCY CONVERSION AND HAVING MEANS FOR TUNING WITHIN AN EXTENDED FREQUENCY RANGE, WHEREIN THE TUNING MEANS OF THE INDIVIDUAL STAGES ARE ACTUATED UNDER CONTROL OF A COMMON DRIVE SYSTEM, COMPRISING AN INDICATING DEVICE COOPERATING WITH A CONTROL RESONANCE CIRCUIT WHICH IS FIXEDLY TUNED TO A SINGLE PREDETERMINED OPERATING FREQUENCY OF THE TRANSMITTER OSCILLATOR, AND CIRCUIT MEANS WHEREBY SAID CONTROL RESONANCE CIRCUIT IS SUPPLIED FROM THE TRANSMITTER OSCILLATOR, WITH SUFFICIENT ENERGY FOR EFFECTING INDICATION EVEN WITH STRONG DETUNING OF THE INDIVIDUAL STAGES.
Claim 2
Dependent Claim
91 words
A MULTI-STAGE TRANSMITTER FOR VERY SHORT ELECTROMAGNETIC WAVES OPERATING WITH FREQUENCY CONVERSION AND HAVING MEANS FOR TUNING WITHIN AN EXTENDED FREQUENCY RANGE, WHEREIN THE TUNING MEANS OF THE INDIVIDUAL STAGES ARE ACTUATED UNDER CONTROL OF A COMMON DRIVE SYSTEM, COMPRISING AN INDICATING DEVICE COOPERATING WITH A CONTROL RESONANCE CIRCUIT WHICH IS FIXEDLY TUNED TO A SINGLE PREDETERMINED OPERATING FREQUENCY OF THE TRANSMITTER OSCILLATOR, AND CIRCUIT MEANS WHEREBY SAID CONTROL RESONANCE CIRCUIT IS SUPPLIED FROM THE TRANSMITTER OSCILLATOR, WITH SUFFICIENT ENERGY FOR EFFECTING INDICATION EVEN WITH STRONG DETUNING OF THE INDIVIDUAL STAGES.
References Cited (Backward Citations)
US2474354A
Cited
US2539673A
Cited
US2668232A
Cited
US2750564A
Cited
US2568412A
Cited
US2805334A
Cited
US2790150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |