Patent US2450079A successfully refreshed from Google Patents.
Patent US3305781A successfully refreshed from Google Patents.
US3305781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity combiners
Assignee: Raytheon Co
•
Filing: 1966-09-09
•
Granted: 1967-02-21
•
Expires: 1986-09-09
Abstract
No abstract record available.
Inventors
- 👤 Robinson Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:17
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0837; H04B7/0842; H04B7/0848; H04B7/0857
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A SYSTEM FOR COMBINING A PLURALITY OF SIGNALS REPRESENTATIVE OF A SINGLE TRANSMITTED SIGNAL COMPRISING A PLURALITY OF SWITCHING DEVICES, EACH OF SAID SWITCHING DEVICES BEING NORMALLY IN A LOW IMPEDANCE CONDITION, MEANS FOR PERMITTING ONE OF A PLURALITY OF INPUT SIGNALS TO BE APPLIED TO EACH OF SAID SWITCHING DEVICES, MEANS FOR COMBINING SAID INPUT SIGNALS COUPLED TO EACH OF SAID SWITCHING DEVICES, AND MEANS FOR PLACING SELECTED SWITCHING DEVICES IN A HIGH IMPEDANCE CONDITION IN ACCORDANCE WITH A COMPARISON BETWEEN A SIGNAL REPRESENTATIVE OF THE NOISE POWER CONTENTS OF EACH OF SAID INPUT SIGNALS TO SELECTIVELY IMPEDE AT LEAST ONE OF SAID INPUT SIGNALS FROM BEING PROVIDED TO SAID MEANS FOR COMBINING.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |