Patent US2809559A successfully refreshed from Google Patents.
US2809559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket projector
Assignee: Individual
•
Filing: 1954-03-29
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Granted: 1957-10-15
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Charles C Lauritsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:32
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/0406; F41A; F41A19/00; F41A19/58; F41A19/69; F41A33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US455279A
Cited
GB189425326A
Cited
GB189902568A
Cited
US757790A
Cited
US785644A
Cited
GB267836A
Cited
GB367553A
Cited
US2325560A
Cited
GB525065A
Cited
US2342684A
Cited
US2659274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |