US3421528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture cleaning device
Assignee: Ludgero S A Gomez
•
Filing: 1964-10-21
•
Granted: 1969-01-14
•
Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 Ludgero S A Gomez
- 👤 James Neil Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:36
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/102; B08B3/104; A; A61; A61C; A61C17/00; A61C17/036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1596969A
Cited
US1718613A
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US2282866A
Cited
US2549121A
Cited
US2655011A
Cited
US2828950A
Cited
US3132657A
Cited
US3265369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |