US2734570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hallden
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:09
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/02; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4708; Y10T83/4711
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US911548A
Cited
GB140440A
Cited
US1836712A
Cited
US1878121A
Cited
US2144308A
Cited
US2220236A
Cited
US2261007A
Cited
US2341494A
Cited
US2339456A
Cited
US2327106A
Cited
US2642937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |