US1997843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing openings in multi-ply flexible materials
Assignee: Pharis Tire & Rubber Co
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Filing: 1934-07-14
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Granted: 1935-04-16
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Expires: 1954-07-14
Abstract
No abstract record available.
Inventors
- 👤 Jonas E Warrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:19
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/01; B26D7/018; B26F; B26F1/00; B26F1/16; B26F1/38; B26F1/3866; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995; Y10T408/00; Y10T408/03; Y10T408/44; Y10T408/45; Y10T408/453; Y10T408/55; Y10T408/554; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0443; Y10T83/0515; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2122; Y10T83/2127; Y10T83/263; Y10T83/465; Y10T83/4734; Y10T83/566
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) | 1938-04-15 | 1938-10-15 | 1939-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-15 | 1942-10-15 | 1943-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-15 | 1946-10-15 | 1947-04-16 | $7700.00 | Window Closed / Lapsed |