US2037838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making split tapered formed collars
Assignee: JOHN H VAN UUM
•
Filing: 1935-05-14
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Granted: 1936-04-21
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Expires: 1955-05-14
Abstract
No abstract record available.
Inventors
- 👤 John H Van Uum
- 👤 Hoffman John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:46
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/20; Y; Y10; Y10S; Y10S16/00; Y10S16/42; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49798; Y10T29/51
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) | 1939-04-21 | 1939-10-21 | 1940-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-21 | 1943-10-21 | 1944-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-21 | 1947-10-21 | 1948-04-21 | $7700.00 | Window Closed / Lapsed |