US122437A
Expired / Lapsed
US
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Improvement in electro-magnetic apparatus for noting meteorological changes
Assignee: —
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Filing: —
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Granted: 1872-01-02
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Expires: 1889-01-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:25
CPC Classifications
G; G08; G08C; G08C15/00; G08C15/06; G08C15/12; H; H03; H03M; H03M1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1875-01-01 | 1875-07-03 | 1876-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1879-01-01 | 1879-07-03 | 1880-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1883-01-01 | 1883-07-03 | 1884-01-02 | $7700.00 | Window Closed / Lapsed |