US2540494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent hair waving
Assignee: Individual
•
Filing: 1949-09-03
•
Granted: 1951-02-06
•
Expires: 1969-09-03
Abstract
No abstract record available.
Inventors
- 👤 Milton H Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:03
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/645; A61Q; A61Q5/00; A61Q5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1681170A
Cited
AT117071B
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US2201929A
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US2261094A
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US2155178A
Cited
US2405166A
Cited
US2418071A
Cited
US2413983A
Cited
US2446227A
Cited
US2479382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |