US2758887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety lifeline lock unit for building supported scaffolds
Assignee: JOAN HEROD VAN VOORHEES
•
Filing: 1952-06-04
•
Granted: 1956-08-14
•
Expires: 1972-06-04
Abstract
No abstract record available.
Inventors
- 👤 Herod Fay Randle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:40
CPC Classifications
E; E04; E04G; E04G3/00; E04G3/28; E04G3/30; E04G3/32; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936
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) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |