US2120548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug insert for friction element and method of making the same
Assignee: Johns Manville Corp
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Filing: 1935-01-29
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Granted: 1938-06-14
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Expires: 1955-01-29
Abstract
No abstract record available.
Inventors
- 👤 Collier Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:44
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/04; F16D69/0416; F16D2069/0425; F16D2069/045; F16D2069/0466; F16D2069/0475; F16D2069/0491
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) | 1941-06-13 | 1941-12-13 | 1942-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-06-13 | 1945-12-13 | 1946-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-06-13 | 1949-12-13 | 1950-06-14 | $7700.00 | Window Closed / Lapsed |