US3213410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel navigating system
Assignee: Individual
•
Filing: 1955-01-28
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Granted: 1965-10-19
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Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 Hagemann Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:55
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/87; G01S15/874; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A CHANNEL DEFINING SYSTEM FOR AIDING THE NAVIGATION OF A VESSEL THROUGH A BODY OF WATER INCLUDING A PLURALITY OF SUBMERGED SONIC TRANSPONDERS EQUALLY SPACED ALONG THE LENGTH OF THE CHANNEL AND LATERALLY DISPLACED TO ONE SIDE OF THE CENTER LINE OF THE CHANNEL BY EQUAL DISTENCES, EACH OF SAID TRANSPONDERS INCLUDING MEANS FOR GENERATING PULSES OF SOUND ENERGY AT A FREQUENCY WHICH IS DIFFERENT FROM THAT GENERATED BY EITHER OF ITS IMMEDIATE NEIGHBORING TRANSPONDERS, AND RECEIVER MEANS RESPONSIVE TO RECEIVED SONIC ENERGY OF A PREDETERMINED FREQUENCY FOR TRIGGERING
Claim 2
Dependent Claim
89 words
A CHANNEL DEFINING SYSTEM FOR AIDING THE NAVIGATION OF A VESSEL THROUGH A BODY OF WATER INCLUDING A PLURALITY OF SUBMERGED SONIC TRANSPONDERS EQUALLY SPACED ALONG THE LENGTH OF THE CHANNEL AND LATERALLY DISPLACED TO ONE SIDE OF THE CENTER LINE OF THE CHANNEL BY EQUAL DISTENCES, EACH OF SAID TRANSPONDERS INCLUDING MEANS FOR GENERATING PULSES OF SOUND ENERGY AT A FREQUENCY WHICH IS DIFFERENT FROM THAT GENERATED BY EITHER OF ITS IMMEDIATE NEIGHBORING TRANSPONDERS, AND RECEIVER MEANS RESPONSIVE TO RECEIVED SONIC ENERGY OF A PREDETERMINED FREQUENCY FOR TRIGGERING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |