US2952852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face mask lens attaching means
Assignee: Avox Systems Inc
•
Filing: 1956-05-07
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Granted: 1960-09-20
•
Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Corey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
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)
US1105127A
Cited
US1404668A
Cited
US1289481A
Cited
US2586851A
Cited
US2107720A
Cited
US2521558A
Cited
FR1023882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |