US2809646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split cylinder hair curlers
Assignee: Individual
•
Filing: 1955-04-19
•
Granted: 1957-10-15
•
Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Nathan L Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:17
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US317216A
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US1042886A
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US1891589A
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US2046586A
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US2112074A
Cited
US2136783A
Cited
US2169021A
Cited
US2218082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |