US888611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark-coil.
Assignee: Individual
•
Filing: 1908-03-06
•
Granted: 1908-05-26
•
Expires: 1928-03-06
Abstract
No abstract record available.
Inventors
- 👤 John Otto Heinze Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/02; F02P3/04; F02P3/055; H; H10; H10W; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20
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) | 1911-05-26 | 1911-11-25 | 1912-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-05-26 | 1915-11-25 | 1916-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-05-26 | 1919-11-25 | 1920-05-26 | $7700.00 | Window Closed / Lapsed |