US2779532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Root's blowers, in particular for suction purposes
Assignee: Individual
•
Filing: 1955-09-30
•
Granted: 1957-01-29
•
Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
- 👤 Herschmann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:45
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02; F01; F01C; F01C21/00; F01C21/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |