Patent US577671A successfully refreshed from Google Patents.
US577671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of electrical condensers, coils, etc.
Assignee: Individual
•
Filing: 1896-11-05
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Granted: 1897-02-23
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Expires: 1916-11-05
Abstract
No abstract record available.
Inventors
- 👤 Nikola Tesla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:58
CPC Classifications
H; H01; H01G; H01G13/00
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) | 1900-02-23 | 1900-08-25 | 1901-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-02-24 | 1904-08-25 | 1905-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-02-24 | 1908-08-25 | 1909-02-24 | $7700.00 | Window Closed / Lapsed |