US2153173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making brake drums
Assignee: Campbell Wyant and Cannon Foundry Co
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Filing: 1937-07-27
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Granted: 1939-04-04
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Expires: 1957-07-27
Abstract
No abstract record available.
Inventors
- 👤 Donald J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/26; B21D53/34; F; F16; F16D; F16D65/00; F16D65/02; F16D2065/13; F16D2065/1304; F16D2065/1332; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49792; Y10T29/49826; Y10T29/49877; Y10T29/49908; Y10T29/49915; Y10T29/49925; Y10T29/49927; Y10T29/4998; Y10T29/49988; Y10T29/49989
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) | 1942-04-03 | 1942-10-03 | 1943-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-03 | 1946-10-03 | 1947-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-03 | 1950-10-03 | 1951-04-04 | $7700.00 | Window Closed / Lapsed |