Patent US3837526A successfully refreshed from Google Patents.
US520818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
John j
Assignee: —
•
Filing: —
•
Granted: 1894-06-05
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Expires: 1911-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:24
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/12; H02G1/1202; H02G1/1204; H02G1/1207; H02G1/1209; H02G1/1214; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53639
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) | 1897-06-04 | 1897-12-04 | 1898-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1901-06-05 | 1901-12-05 | 1902-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1905-06-05 | 1905-12-05 | 1906-06-06 | $7700.00 | Window Closed / Lapsed |