US2100537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrous metal
Assignee: Individual
•
Filing: 1935-08-26
•
Granted: 1937-11-30
•
Expires: 1955-08-26
Abstract
No abstract record available.
Inventors
- 👤 Martin J Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:05
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/48; C23C22/50; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49751; Y10T29/49753; Y10T428/00; Y10T428/12; Y10T428/12014
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) | 1940-11-29 | 1941-05-31 | 1941-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-29 | 1945-05-31 | 1945-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-29 | 1949-05-31 | 1949-11-30 | $7700.00 | Window Closed / Lapsed |