US2780842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Girders
Assignee: Individual
•
Filing: 1951-10-03
•
Granted: 1957-02-12
•
Expires: 1971-10-03
Abstract
No abstract record available.
Inventors
- 👤 Hess Hanns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:39
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/12; E04C3/16; E04C3/38; E04C3/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US116623A
Cited
US164511A
Cited
US238491A
Cited
US321939A
Cited
US480536A
Cited
US524353A
Cited
DE322760C
Cited
US1571238A
Cited
FR536508A
Cited
US1417657A
Cited
US2334113A
Cited
US2455217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |