US2996722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face mask
Assignee: Avox Systems Inc
•
Filing: 1956-03-19
•
Granted: 1961-08-22
•
Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 John J Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:00
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; A62B18/082; B; B63; B63C; B63C11/00; B63C11/02; B63C11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1385583A
Cited
US1686516A
Cited
GB381099A
Cited
US2036850A
Cited
US2158693A
Cited
US2375147A
Cited
US2359506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |