Patent US4854873A successfully refreshed from Google Patents.
Patent US2298101A successfully refreshed from Google Patents.
US2298101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making rubber nasal masks
Assignee: American Anode Inc
•
Filing: 1941-03-29
•
Granted: 1942-10-06
•
Expires: 1961-03-29
Abstract
No abstract record available.
Inventors
- 👤 Carl L Beal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:42
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0064; B29D99/0071; A; A62; A62B; A62B23/00; A62B23/06; B29L; B29L2031/00; B29L2031/48; B29L2031/4807; B29L2031/4835; Y; Y10; Y10S; Y10S264/00; Y10S264/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-10-05 | 1946-04-06 | 1946-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-05 | 1950-04-06 | 1950-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-05 | 1954-04-06 | 1954-10-06 | $7700.00 | Window Closed / Lapsed |