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US2917901A
Expired / Lapsed
US
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Load carrying structure
Assignee: Individual
•
Filing: 1955-04-07
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Granted: 1959-12-22
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Expires: 1975-04-07
Abstract
No abstract record available.
Inventors
- 👤 Lackner Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:28
CPC Classifications
E; E02; E02D; E02D27/00; E02D27/32; E02D27/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL61976C
Cited
GB746589A
Cited
CA485545A
Cited
US1129677A
Cited
US1961986A
Cited
US2384616A
Cited
FR1028862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |