US2744805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift mechanism for extending a horizontal support
Assignee: Individual
•
Filing: 1952-11-24
•
Granted: 1956-05-08
•
Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Mcmahan Walter Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:52
CPC Classifications
A; A47; A47B; A47B21/00; A47B21/02; A47B77/00; A47B77/04; A47B77/10; A47B77/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035664A
Cited
CH99489A
Cited
US1606975A
Cited
US2322648A
Cited
US2428211A
Cited
US2585566A
Cited
US2561505A
Cited
US2676077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |