US1978620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material and method of making the same
Assignee: Uniroyal Chemical Co Inc
•
Filing: 1931-04-30
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Granted: 1934-10-30
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Expires: 1951-04-30
Abstract
No abstract record available.
Inventors
- 👤 Nehemiah H Brewster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:56
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/66; D04H1/70; D04H1/74; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24273; Y10T442/00; Y10T442/60; Y10T442/682
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) | 1937-10-29 | 1938-04-30 | 1938-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-29 | 1942-04-30 | 1942-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-29 | 1946-04-30 | 1946-10-30 | $7700.00 | Window Closed / Lapsed |