US2227424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction material
Assignee: Johns Manville Corp
•
Filing: 1935-10-25
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Granted: 1941-01-07
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Expires: 1955-10-25
Abstract
No abstract record available.
Inventors
- 👤 Donald S Bruce
- 👤 Ralph T Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:46
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; C; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12
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) | 1944-01-07 | 1944-07-08 | 1945-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-07 | 1948-07-08 | 1949-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-07 | 1952-07-08 | 1953-01-07 | $7700.00 | Window Closed / Lapsed |