US2876386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric disintegration of conductive materials
Assignee: Sparcatron Ltd
•
Filing: 1957-04-09
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Granted: 1959-03-03
•
Expires: 1977-04-09
Abstract
No abstract record available.
Inventors
- 👤 Fefer Gregory
- 👤 Rudorff Dagobert William
- 👤 Seed Michael Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:23
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2628330A
Cited
US2804575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |