Patent US1952469A successfully refreshed from Google Patents.
US1952469A
Expired / Lapsed
US
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Combination product
Assignee: Wingfoot Corp
•
Filing: 1931-01-17
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Granted: 1934-03-27
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Expires: 1951-01-17
Abstract
No abstract record available.
Inventors
- 👤 Robert W Snyder
- 👤 Jorgen I Haase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/19; B29C48/25; B29C48/285; B29C48/288; B29C48/2888; B29C48/03; B29C48/07; B29C48/08; B29L; B29L2030/00; B29L2030/002
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) | 1937-03-26 | 1937-09-25 | 1938-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-03-26 | 1941-09-25 | 1942-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-03-26 | 1945-09-25 | 1946-03-27 | $7700.00 | Window Closed / Lapsed |