US1342398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for searchlights and method of making the same
Assignee: Individual
•
Filing: 1916-07-15
•
Granted: 1920-06-01
•
Expires: 1936-07-15
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:28
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/02; H05B31/06; H05B31/16; H05B31/065; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117
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) | 1923-06-01 | 1923-12-01 | 1924-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-06-01 | 1927-12-01 | 1928-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-06-01 | 1931-12-01 | 1932-06-01 | $7700.00 | Window Closed / Lapsed |