US1600822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake-slack-adjuster mechanism
Assignee: American Steel Foundries
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Filing: 1924-11-28
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Granted: 1926-09-21
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Expires: 1944-11-28
Abstract
No abstract record available.
Inventors
- 👤 William C Hedgcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:56
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0064; B61H15/0071; B61H15/0085; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1929-09-20 | 1930-03-22 | 1930-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-09-20 | 1934-03-22 | 1934-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-09-20 | 1938-03-22 | 1938-09-21 | $7700.00 | Window Closed / Lapsed |