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US2717801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting apparatus for construction materials
Assignee: Individual
•
Filing: 1952-08-27
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Granted: 1955-09-13
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Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 William P Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:26
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |