Patent US2877764A successfully refreshed from Google Patents.
US2877764A
Expired / Lapsed
US
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Selective contour retaining mask
Assignee: Individual
•
Filing: 1956-10-15
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Granted: 1959-03-17
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Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Ellis A Galleher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:12
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0605; A62; A62B; A62B18/00; A62B18/02; A62B18/025; A61M2016/0661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2749910A
Cited
US2220374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |