US2858442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for increasing the uniformity of dose distribution produced by electron irradiation
Assignee: High Voltage Engineering Corp
•
Filing: 1954-03-18
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Granted: 1958-10-28
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Expires: 1974-03-18
Abstract
No abstract record available.
Inventors
- 👤 Ii Davis R Dewey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04; B; B29; B29C; B29C71/00; B29C71/04; D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0445; G; G21; G21K; G21K5/00; G21K5/04; G21K5/10; B29C35/00; B29C35/02; B29C35/08; B29C35/0866; B29C2035/0877; B29L; B29L2007/00; B29L2007/008; B29L2031/00; B29L2031/731
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001555A
Cited
US2602751A
Cited
US2680814A
Cited
US2737593A
Cited
US2722620A
Cited
US2668133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |