Patent US2911642A successfully refreshed from Google Patents.
US2911642A
Expired / Lapsed
US
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Electronic position indicator
Assignee: Individual
•
Filing: 1955-12-19
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Granted: 1959-11-03
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Hickley
- 👤 Clarence A Burmister
- 👤 Richard R Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:28
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/02; G01S5/14; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |