US2590617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold for handling sheet material
Assignee: Individual
•
Filing: 1949-07-05
•
Granted: 1952-03-25
•
Expires: 1969-07-05
Abstract
No abstract record available.
Inventors
- 👤 Lee R Henderson
- 👤 Alfred C Seago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:19
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/18; E04F21/1805; E04F21/1811; Y; Y10; Y10S; Y10S187/00; Y10S187/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US522526A
Cited
US1332011A
Cited
US1644613A
Cited
US1639962A
Cited
US2183679A
Cited
US2285901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |