Patent US600981A successfully refreshed from Google Patents.
US600981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measuring instrument
Assignee: —
•
Filing: —
•
Granted: 1898-03-22
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Expires: 1915-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/30
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) | 1901-03-22 | 1901-09-21 | 1902-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1905-03-22 | 1905-09-21 | 1906-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1909-03-22 | 1909-09-21 | 1910-03-23 | $7700.00 | Window Closed / Lapsed |