US2733641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
praeg
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:15
CPC Classifications
B; B23; B23F; B23F23/00; B23F23/02; B23F23/04; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/100795; Y10T409/100954; Y10T82/00; Y10T82/25; Y10T82/2514; Y10T82/2516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US835525A
Cited
US937259A
Cited
US953752A
Cited
CH60584A
Cited
US1794424A
Cited
US1765825A
Cited
US1841988A
Cited
USRE18559E
Cited
US1933226A
Cited
US2004540A
Cited
US2692535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |