US2041950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible cover
Assignee: National Standard Co
•
Filing: 1935-08-05
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Granted: 1936-05-26
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Expires: 1955-08-05
Abstract
No abstract record available.
Inventors
- 👤 Robert C Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:14
CPC Classifications
D; D04; D04C; D04C1/00; D04C1/06; E; E21; E21C; E21C37/00; E21C37/06
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) | 1939-05-26 | 1939-11-25 | 1940-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-26 | 1943-11-25 | 1944-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-26 | 1947-11-25 | 1948-05-26 | $7700.00 | Window Closed / Lapsed |