Patent US3440724A successfully refreshed from Google Patents.
US3440724A
Expired / Lapsed
US
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Dry shaver with two cutting units
Assignee: Braun GmbH
•
Filing: 1967-05-02
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Granted: 1969-04-29
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Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Robert Wich
- 👤 Werner Messinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/08; B; B26; B26B; B26B19/00; B26B19/02; B26B19/04; B26B19/10; B26B19/107; B26B19/38; C08J9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2574317A
Cited
DE1004520B
Cited
DE1051161B
Cited
US2873520A
Cited
GB827768A
Cited
US2917824A
Cited
CH353652A
Cited
FR1262046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |