US1774386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing metallic tubes or shafts
Assignee: METALLIC SHAFT Co
•
Filing: 1928-07-17
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Granted: 1930-08-26
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Expires: 1948-07-17
Abstract
No abstract record available.
Inventors
- 👤 Allan E Lard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:21
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49826; Y10T29/49879; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12292; Y10T428/12354
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) | 1933-08-25 | 1934-02-24 | 1934-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-08-25 | 1938-02-24 | 1938-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-08-25 | 1942-02-24 | 1942-08-26 | $7700.00 | Window Closed / Lapsed |