Patent US2131610A successfully refreshed from Google Patents.
US2701353A
Expired / Lapsed
US
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Positioning signaling device
Assignee: CROWN CONTROLS Co Inc
•
Filing: 1950-05-19
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Granted: 1955-02-01
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Expires: 1970-05-19
Abstract
No abstract record available.
Inventors
- 👤 Elmer Van Sickle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:54
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/125; G05D3/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US461371A
Cited
US1342635A
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US1913511A
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US1927983A
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US2081134A
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US2448787A
Cited
US2450516A
Cited
US2559339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |