US3438894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Efflorescent composition
Assignee: Individual
•
Filing: 1966-01-25
•
Granted: 1969-04-15
•
Expires: 1986-01-25
Abstract
No abstract record available.
Inventors
- 👤 Kurt Ludwig Von Stoesser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:18
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/20; A; A61; A61L; A61L9/00; A61L9/01; C11; C11D; C11D3/00; C11D3/50; D; D06; D06M; D06M13/00; D06M13/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2383653A
Cited
GB916570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |