US2941534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair curlers for permanent waving
Assignee: Individual
•
Filing: 1956-04-12
•
Granted: 1960-06-21
•
Expires: 1976-04-12
Abstract
No abstract record available.
Inventors
- 👤 Otto Carl Louis
- 👤 Otto La Nelle Burnham
- 👤 Briton Joan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/24; A45D2/2435; Y; Y10; Y10S; Y10S132/00; Y10S132/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894795A
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US1919600A
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US1995688A
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US1965953A
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US2077198A
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US2156909A
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US2288446A
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US2600727A
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US2758604A
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US2720206A
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US2752923A
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US2793645A
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US2842140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |