Patent US728183A successfully refreshed from Google Patents.
US728183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of winding electrical coils.
Assignee: VARLEY DUPLEX MAGNET CO
•
Filing: 1903-02-04
•
Granted: 1903-05-12
•
Expires: 1923-02-04
Abstract
No abstract record available.
Inventors
- 👤 Richard Varley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B31; B31C; B31C1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1906-05-11 | 1906-11-10 | 1907-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-05-11 | 1910-11-10 | 1911-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-05-11 | 1914-11-10 | 1915-05-12 | $7700.00 | Window Closed / Lapsed |