Patent GB413697A successfully refreshed from Google Patents.
US3521637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tampon or similar sanitary napkin containing vitamin a
Assignee: Individual
•
Filing: 1967-11-28
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Granted: 1970-07-28
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Expires: 1987-11-28
Abstract
No abstract record available.
Inventors
- 👤 Nelson J Waterbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:29
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/34; A61F13/2051; A61K; A61K31/00; A61K31/59; A61K9/00; A61K9/0012; A61K9/0034; A61K9/0036; A61L; A61L15/00; A61L15/16; A61L15/20; A61L15/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |