Patent US2854840A successfully refreshed from Google Patents.
US2854840A
Expired / Lapsed
US
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Magnetic marker wire
Assignee: Individual
•
Filing: 1956-09-28
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Granted: 1958-10-07
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Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Aaron W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:34
CPC Classifications
F; F24; F24D; F24D5/00; Y; Y10; Y10S; Y10S116/00; Y10S116/14; Y10S52/00; Y10S52/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1461492A
Cited
US1975976A
Cited
US2043367A
Cited
US2187087A
Cited
US2558977A
Cited
US2527681A
Cited
US2783639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |