Patent US2580980A successfully refreshed from Google Patents.
US2580980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling-suspended elevatable table
Assignee: Individual
•
Filing: 1950-04-21
•
Granted: 1952-01-01
•
Expires: 1970-04-21
Abstract
No abstract record available.
Inventors
- 👤 Herschel C Vrooman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:34
CPC Classifications
A; A47; A47B; A47B5/00; A47B13/00; A47B13/02; A47B13/023; A47B2005/003
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US495409A
Cited
US911149A
Cited
US1185642A
Cited
US1178343A
Cited
US1199770A
Cited
US1637688A
Cited
US2035874A
Cited
US2484678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |