Patent US2409904A successfully refreshed from Google Patents.
US2409904A
Expired / Lapsed
US
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Rocket
Assignee: Schermuly Pistol Rocket Apparatus Ltd
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Filing: 1944-06-13
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Granted: 1946-10-22
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Expires: 1964-06-13
Abstract
No abstract record available.
Inventors
- 👤 Schermuly Conrad David
- 👤 Schermuly Alfred James
- 👤 Schermuly Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:47
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/68; F42B10/00; F42B10/02; F42B10/12
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) | 1949-10-21 | 1950-04-22 | 1950-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-21 | 1954-04-22 | 1954-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-21 | 1958-04-22 | 1958-10-22 | $7700.00 | Window Closed / Lapsed |