US2547810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Appliance useful in permanent waving of hair
Assignee: CHESTER M MILLER
•
Filing: 1946-12-05
•
Granted: 1951-04-03
•
Expires: 1966-12-05
Abstract
No abstract record available.
Inventors
- 👤 Burgess Marion Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:23
CPC Classifications
A; A45; A45D; A45D19/00; A45D19/06; A45D19/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US772763A
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GB190412475A
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US835814A
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US1612602A
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US2032898A
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US2031001A
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US2136039A
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US2162608A
Cited
US2434279A
Cited
US2424352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |