Patent US2201198A successfully refreshed from Google Patents.
US2201198A
Expired / Lapsed
US
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Gas mask facepiece
Assignee: Individual
•
Filing: 1938-02-24
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Granted: 1940-05-21
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Expires: 1958-02-24
Abstract
No abstract record available.
Inventors
- 👤 Monro Randolph
- 👤 Armand V Motsinger
- 👤 Herbert A Scruton
- 👤 Glenn A Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:03
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 0
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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) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |