Patent US2654524A successfully refreshed from Google Patents.
US2654524A
Expired / Lapsed
US
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Ladder operating mechanism
Assignee: MCCABE POWERS AUTO BODY CO
•
Filing: 1949-07-07
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Granted: 1953-10-06
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Expires: 1969-07-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene G Humpal
- 👤 Roy O Balogh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:39
CPC Classifications
E; E06; E06C; E06C5/00; E06C5/02; E06C5/04; E06C5/06; E06C5/08; E06C5/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |