US1697852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicylinder pump
Assignee: TUBIZE ARTIFICIAL SILK Co
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Filing: 1927-01-11
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Granted: 1929-01-08
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Expires: 1947-01-11
Abstract
No abstract record available.
Inventors
- 👤 Walter L Coursen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:08
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/122; F04B1/124; F04B1/126; F04B1/20; F04B1/2014; F04B1/2042; F04B1/205; F04B1/2064; F04B1/26; F04B1/30; F04B1/306
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) | 1932-01-08 | 1932-07-09 | 1933-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-01-08 | 1936-07-09 | 1937-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-01-08 | 1940-07-09 | 1941-01-08 | $7700.00 | Window Closed / Lapsed |