US2536759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arch construction
Assignee: UNITED STEEL FABRICATORS Inc
•
Filing: 1946-12-13
•
Granted: 1951-01-02
•
Expires: 1966-12-13
Abstract
No abstract record available.
Inventors
- 👤 William C Martin
- 👤 Macleod Donald Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:47
CPC Classifications
E; E01; E01F; E01F5/00; E01F5/005; E21; E21D; E21D11/00; E21D11/14; E21D11/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US596010A
Cited
US2217292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |