Patent US2228665A successfully refreshed from Google Patents.
US2228665A
Expired / Lapsed
US
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Two voltage shaver
Assignee: Knapp Monarch Co
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Filing: 1940-07-15
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Granted: 1941-01-14
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Expires: 1960-07-15
Abstract
No abstract record available.
Inventors
- 👤 Knopp Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:39
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/28; B26B19/282; B26B19/284; H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; H02; H02K; H02K33/00; H02K33/02; H02K33/10
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) | 1944-01-14 | 1944-07-15 | 1945-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-14 | 1948-07-15 | 1949-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-14 | 1952-07-15 | 1953-01-14 | $7700.00 | Window Closed / Lapsed |