US3553728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency measuring apparatus with automatic adjustment of measurement interval for enhanced speed and accuracy
Assignee: General Radio Co
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Filing: 1968-05-20
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Granted: 1971-01-05
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Expires: 1988-05-20
Abstract
Abstract THIS DISCLOSURE DEALS WITH AUTOMATICALLY ADAPTIVE COUNTER APPARATUS, AS FOR FREQUENCY MEASUREMENTS, IN WHICH AN ARITHMETIC RECIPROCATOR IS EMPLOYED SUCH THAT WITH THE COUNTER CLOCK LIMITED IN FREQUENCY ONLY BY THE MAXIMUM COUNTING DECADE RESOLUTION, THE DOCK WILL FILL THE COUNTING REGISTERS AT THE MAXIMUM POSSIBLE SPEED TO ANY DESIRED NUMBER OF SIGNIFICANT FIGURES, WITH THE ANSWER PREFEREBLY ALWAYS PRESENTED AS FREQUENCY.
Inventors
- 👤 Richard W Frank
- 👤 Robert G Fulks
- 👤 James K Skilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02; G04; G04F; G04F10/00; G04F10/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |