Patent US3267271A successfully refreshed from Google Patents.
US3267271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the analog computation of earth curvature correction
Assignee: Electronic Associates Inc
•
Filing: 1963-01-16
•
Granted: 1966-08-16
•
Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 William K Kindle
- 👤 Thomas Z Smidowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:31
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/46; G06; G06G; G06G7/00; G06G7/48; G06G7/78
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
AN APPARATUS FOR COMPUTING THE EARTH CURVATURE CORRECTED HEIGHT H OF A TARGET OBJECT ABOVE THE EARTH''S SURFACE AS SENSED BY A GROUND-BASE RADAR WHICH SUPPLIES THE UNCORRECTED HORIZONTAL RANGE RO AND HEIGHT Z OF THE TARGET OBJECT, ASSUMING THE RADIUS OF THE EARTH R TO BE KNOWN, COMPRISING: (A) MEANS FOR COMPUTING THE EARTH CURVATURE CORRECTED HORIZONTAL RANGE RC OF THE TARGET OBJECT IN ACCORDANCE WITH THE EXPRESSION
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |