US2933647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-discharge system
Assignee: Revvity Inc
•
Filing: 1956-06-14
•
Granted: 1960-04-19
•
Expires: 1976-06-14
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Germeshausen
- 👤 Harold E Edgerton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:09
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2127605A
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US1858985A
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US2037161A
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US2127005A
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US2212404A
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US2259613A
Cited
US2391611A
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US2722629A
Cited
US2587452A
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US2509005A
Cited
US2775718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |