US1986224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch contact
Assignee: Stackpole Carbon Co
•
Filing: 1930-03-01
•
Granted: 1935-01-01
•
Expires: 1950-03-01
Abstract
No abstract record available.
Inventors
- 👤 Vernon H Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:46
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/027; Y; Y10; Y10S; Y10S29/00; Y10S29/031; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12146; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882; Y10T428/12896; Y10T428/12903
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) | 1937-12-31 | 1938-07-02 | 1939-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-31 | 1942-07-02 | 1943-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-31 | 1946-07-02 | 1947-01-01 | $7700.00 | Window Closed / Lapsed |