US2577348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lift
Assignee: Individual
•
Filing: 1946-07-11
•
Granted: 1951-12-04
•
Expires: 1966-07-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth P Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:20
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/40; E05D15/403; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1588663A
Cited
US1964114A
Cited
US1946970A
Cited
US2040080A
Cited
US2124969A
Cited
US2097950A
Cited
US2344276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |