US2747700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slack adjusting devices for air brakes
Assignee: Individual
•
Filing: 1952-09-04
•
Granted: 1956-05-29
•
Expires: 1972-09-04
Abstract
No abstract record available.
Inventors
- 👤 John J Daly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:52
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0007; B61H15/0014; B61H15/0021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1166465A
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US1522275A
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US1991262A
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US1738395A
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US1972004A
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US2118890A
Cited
US2559779A
Cited
US2664975A
Cited
US2648408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |