Patent US2909959A successfully refreshed from Google Patents.
US2909959A
Expired / Lapsed
US
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Swimming face mask with periscope
Assignee: Individual
•
Filing: 1958-11-26
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Granted: 1959-10-27
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Expires: 1978-11-26
Abstract
No abstract record available.
Inventors
- 👤 Barney B Girden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:55
CPC Classifications
G; G02; G02B; G02B23/00; B; B63; B63C; B63C11/00; B63C11/02; B63C11/12; B63C11/16; B63C2011/126
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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |