US2219442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic tool die and the method of manufacture thereof
Assignee: Eagle Pencil Co
•
Filing: 1936-07-01
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Granted: 1940-10-29
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Expires: 1956-07-01
Abstract
No abstract record available.
Inventors
- 👤 Chesler Isidor
- 👤 Karl M Herstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:13
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; B; B21; B21C; B21C25/00; B21C25/02; B21C25/025; C04B35/16; C04B35/18; C04B35/48
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) | 1943-10-29 | 1944-04-29 | 1944-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-29 | 1948-04-29 | 1948-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-29 | 1952-04-29 | 1952-10-29 | $7700.00 | Window Closed / Lapsed |