Patent DE927217C successfully refreshed from Google Patents.
US3281844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position indicating apparatus
Assignee: Individual
•
Filing: 1963-12-16
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Granted: 1966-10-25
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Darrel B Sabin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:35
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A SYSTEM FOR PROVIDING A CONTINUOUS VISUAL INDICATION ON A MAP OF THE POSITION OF A CRAFT COMPRISING MEANS FOR PRODUCING A RADIAL SIGNAL INDICATING THE RADIAL OF A NAVIGATION STATION ON WHICH THE CRAFT IS LOCATED; POSITION INDICATING MEANS ADAPTED TO BE ALIGNED ON A MAP ON A NAVIGATION STATION INCLUDING RADIAL POINTER MEANS; CIRCUIT MEANS FOR DERIVING A SIGNAL FROM THE POSITION OF SAID RADIAL POINTER MEANS; CIRCUIT MEANS FOR COMPARING SAID DERIVED SIGNAL TO SAID RADIAL SIGNAL; AND RADIAL POINTER ROTATING MEANS RESPONSIVE TO A DIFFERENCE BETWEEN SAID DERIVED AND RADIAL SIGNALS.
Claim 2
Independent Claim
95 words
A SYSTEM FOR PROVIDING A CONTINUOUS VISUAL INDICATION ON A MAP OF THE POSITION OF A CRAFT COMPRISING MEANS FOR PRODUCING A RADIAL SIGNAL INDICATING THE RADIAL OF A NAVIGATION STATION ON WHICH THE CRAFT IS LOCATED; POSITION INDICATING MEANS ADAPTED TO BE ALIGNED ON A MAP ON A NAVIGATION STATION INCLUDING RADIAL POINTER MEANS; CIRCUIT MEANS FOR DERIVING A SIGNAL FROM THE POSITION OF SAID RADIAL POINTER MEANS; CIRCUIT MEANS FOR COMPARING SAID DERIVED SIGNAL TO SAID RADIAL SIGNAL; AND RADIAL POINTER ROTATING MEANS RESPONSIVE TO A DIFFERENCE BETWEEN SAID DERIVED AND RADIAL SIGNALS.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |