Patent US2750852A successfully refreshed from Google Patents.
US2750852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaper
Assignee: Individual
•
Filing: 1953-07-28
•
Granted: 1956-06-19
•
Expires: 1973-07-28
Abstract
No abstract record available.
Inventors
- 👤 Guillaume F Selvaggio
- 👤 Pierre C Ringenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:56
CPC Classifications
B; B23; B23D; B23D3/00; B23D3/04; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/5041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |