US2047634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter and method of making the same
Assignee: IND WIRE CLOTH PRODUCTS COMPAN
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Filing: 1932-11-30
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Granted: 1936-07-14
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Expires: 1952-11-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:48
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/10; B01D39/12; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; B01D2239/00; B01D2239/06; B01D2239/0604; B01D2239/0613; B01D2239/065; B01D2239/0654; B01D2239/0672; B01D2239/069; B01D2239/0695
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) | 1939-07-14 | 1940-01-13 | 1940-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-14 | 1944-01-13 | 1944-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-14 | 1948-01-13 | 1948-07-14 | $7700.00 | Window Closed / Lapsed |