US1903077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of uniting dissimilar metals
Assignee: General Motors Research Corp
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Filing: 1930-12-22
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Granted: 1933-03-28
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Expires: 1950-12-22
Abstract
No abstract record available.
Inventors
- 👤 Harry R Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:38
CPC Classifications
B; B23; B23K; B23K31/00; B23K31/02; B23K31/025; B23B; B23B27/00; B23B27/14; B23B27/18; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10S76/00; Y10S76/11; Y10T; Y10T407/00; Y10T407/26; Y10T407/27; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12576
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) | 1936-03-27 | 1936-09-26 | 1937-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-27 | 1940-09-26 | 1941-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-27 | 1944-09-26 | 1945-03-28 | $7700.00 | Window Closed / Lapsed |