US2568834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hub
Assignee: Individual
•
Filing: 1947-09-17
•
Granted: 1951-09-25
•
Expires: 1967-09-17
Abstract
No abstract record available.
Inventors
- 👤 Streifthau Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:49
CPC Classifications
B; B60; B60B; B60B27/00; B60B27/02; B60B27/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US588975A
Cited
GB189715514A
Cited
US725403A
Cited
US956041A
Cited
US1257893A
Cited
FR526623A
Cited
FR552391A
Cited
US1643460A
Cited
DE638120C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |