US2936862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded lattice girders
Assignee: Individual
•
Filing: 1955-04-06
•
Granted: 1960-05-17
•
Expires: 1975-04-06
Abstract
No abstract record available.
Inventors
- 👤 Cvikl Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:31
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/02; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/11; E04C2003/0486; E04C2003/0495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR596831A
Cited
GB602141A
Cited
GB614171A
Cited
DE888762C
Cited
DE822154C
Cited
DE890860C
Cited
GB718134A
Cited
US2749713A
Cited
US2809074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |