US3351941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio way-following system
Assignee: Individual
•
Filing: 1949-10-06
•
Granted: 1967-11-07
•
Expires: 1969-10-06
Abstract
No abstract record available.
Inventors
- 👤 Robert M Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:16
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/14; F; F41; F41G; F41G7/00; F41G7/20; F41G7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A DIRECTION FINDING SYSTEM, A SIGNAL SOURCE PROVIDING RADIANT ENERGY RELEASE IN SLIGHTLY DIVERGENT OVERLAPPING PATTERNS, MEANS WITHIN SAID SOURCE ALTERNATELY REVERSING THE PHASE OF THE RADIANT ENERGY IN ONE PATTERN, A REMOTE SIGNAL RECEPTIVE DEVICE, FIRST AND SECOND SIGNAL PATHS, RECEIVED SIGNAL RESPONSIVE SWITCH MEANS DELIVERING SIGNALS FROM THE SIGNAL RECEPTIVE DEVICE TO THE FIRST SIGNAL PATH WHEN THE RADIATED ENERGY PATTERNS ARE IN-PHASE AND TO THE SECOND SIGNAL PATH WHEN THE RADIATED ENERGY PATTERNS ARE OUT-OF-PHASE, AND PHASE RESPONSIVE UTILIZATION AP-
Claim 2
Dependent Claim
84 words
IN A DIRECTION FINDING SYSTEM, A SIGNAL SOURCE PROVIDING RADIANT ENERGY RELEASE IN SLIGHTLY DIVERGENT OVERLAPPING PATTERNS, MEANS WITHIN SAID SOURCE ALTERNATELY REVERSING THE PHASE OF THE RADIANT ENERGY IN ONE PATTERN, A REMOTE SIGNAL RECEPTIVE DEVICE, FIRST AND SECOND SIGNAL PATHS, RECEIVED SIGNAL RESPONSIVE SWITCH MEANS DELIVERING SIGNALS FROM THE SIGNAL RECEPTIVE DEVICE TO THE FIRST SIGNAL PATH WHEN THE RADIATED ENERGY PATTERNS ARE IN-PHASE AND TO THE SECOND SIGNAL PATH WHEN THE RADIATED ENERGY PATTERNS ARE OUT-OF-PHASE, AND PHASE RESPONSIVE UTILIZATION AP-
References Cited (Backward Citations)
US2107155A
Cited
US2176469A
Cited
GB571239A
Cited
US2400736A
Cited
US2414791A
Cited
US2438987A
Cited
US2513493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |