US2226078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding mandrel
Assignee: Individual
•
Filing: 1939-09-29
•
Granted: 1940-12-24
•
Expires: 1959-09-29
Abstract
No abstract record available.
Inventors
- 👤 Hilbert C Spahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23B31/404; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1054; Y10T279/1058; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53943; Y10T29/53952; Y10T403/00; Y10T403/55; Y10T403/557; Y10T408/00; Y10T408/55; Y10T408/557; Y10T408/558; Y10T408/96; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |