Patent US1284263A successfully refreshed from Google Patents.
US1284263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for retaining inserts in spark-plug electrodes and the like.
Assignee: Individual
•
Filing: 1917-10-02
•
Granted: 1918-11-12
•
Expires: 1937-10-02
Abstract
No abstract record available.
Inventors
- 👤 Charles Hugh Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:47
CPC Classifications
H; H01; H01T; H01T21/00; H01T21/02; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/398; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T403/00; Y10T403/49; Y10T403/4966; Y10T403/4991
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) | 1921-11-11 | 1922-05-13 | 1922-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-11-11 | 1926-05-13 | 1926-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-11-11 | 1930-05-13 | 1930-11-12 | $7700.00 | Window Closed / Lapsed |