US1563583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum pump
Assignee: Paper & Textile Machinery Co
•
Filing: 1923-06-28
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Granted: 1925-12-01
•
Expires: 1943-06-28
Abstract
No abstract record available.
Inventors
- 👤 William H Millspaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/126
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) | 1928-11-30 | 1929-06-01 | 1929-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-11-30 | 1933-06-01 | 1933-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-11-30 | 1937-06-01 | 1937-12-01 | $7700.00 | Window Closed / Lapsed |