US1538438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming sheet-metal handles
Assignee: Dura Co
•
Filing: 1920-10-11
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Granted: 1925-05-19
•
Expires: 1940-10-11
Abstract
No abstract record available.
Inventors
- 👤 John D Lawrence
- 👤 Stanley W Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:40
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/38; Y; Y10; Y10T; Y10T292/00; Y10T292/82; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732
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) | 1928-05-18 | 1928-11-17 | 1929-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-18 | 1932-11-17 | 1933-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-18 | 1936-11-17 | 1937-05-19 | $7700.00 | Window Closed / Lapsed |