US723836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction apparatus.
Assignee: Individual
•
Filing: 1902-10-24
•
Granted: 1903-03-31
•
Expires: 1922-10-24
Abstract
No abstract record available.
Inventors
- 👤 Percy Foote Cowing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/34; F21V21/14; F21V23/00; F21V23/02; H; H01; H01F; H01F38/00; H01F38/14; H01F27/00; H01F27/06; Y; Y10; Y10S; Y10S336/00; Y10S336/02
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) | 1906-03-30 | 1906-09-29 | 1907-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-03-30 | 1910-09-29 | 1911-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-03-30 | 1914-09-29 | 1915-03-31 | $7700.00 | Window Closed / Lapsed |