US1702554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lowering device
Assignee: WALKER WALLACE Ltd
•
Filing: 1927-10-10
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Granted: 1929-02-19
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Expires: 1947-10-10
Abstract
No abstract record available.
Inventors
- 👤 Charles W Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:56
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/02; B65G33/04; B65G2201/00; B65G2201/02; B65G2201/0235; B65G2201/0244
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) | 1932-02-19 | 1932-08-20 | 1933-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-02-19 | 1936-08-20 | 1937-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-02-19 | 1940-08-20 | 1941-02-19 | $7700.00 | Window Closed / Lapsed |