Patent US2843347A successfully refreshed from Google Patents.
US2843347A
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US
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Support for engineer's plumb rod and highway warning signal
Assignee: Individual
•
Filing: 1954-09-13
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Granted: 1958-07-15
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 John W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:46
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/02; E; E01; E01F; E01F9/00; E01F9/60; E01F9/688; Y; Y10; Y10S; Y10S248/00; Y10S248/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US284513A
Cited
US2283324A
Cited
US2245901A
Cited
US2473047A
Cited
US2502103A
Cited
US2647712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |