US2373656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary operating machine
Assignee: AMERICAN PROTOTYPE Corp
•
Filing: 1943-04-03
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Granted: 1945-04-17
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Expires: 1963-04-03
Abstract
No abstract record available.
Inventors
- 👤 Brull Charles Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F04C2/352; F04C2/3446; F04C2250/00; F04C2250/30; F04C2250/301
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) | 1948-04-16 | 1948-10-16 | 1949-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-16 | 1952-10-16 | 1953-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-16 | 1956-10-16 | 1957-04-17 | $7700.00 | Window Closed / Lapsed |