US1448577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-spinning machine
Assignee: AT&T Inc
•
Filing: 1920-03-19
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Granted: 1923-03-13
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Expires: 1940-03-19
Abstract
No abstract record available.
Inventors
- 👤 Stull John Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:00
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/14; B21D22/16; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305544; Y10T409/30784; Y10T409/307952; Y10T82/00; Y10T82/25; Y10T82/2564
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) | 1926-03-12 | 1926-09-11 | 1927-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-03-12 | 1930-09-11 | 1931-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-03-12 | 1934-09-11 | 1935-03-13 | $7700.00 | Window Closed / Lapsed |