Patent US2728295A successfully refreshed from Google Patents.
US2728295A
Expired / Lapsed
US
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Multiple grain rocket
Assignee: Individual
•
Filing: 1946-10-07
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Granted: 1955-12-27
•
Expires: 1966-10-07
Abstract
No abstract record available.
Inventors
- 👤 Rubin Sylvan
- 👤 William H Corcoran
- 👤 Paul A Longwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:23
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US328919A
Cited
US961179A
Cited
US2062495A
Cited
US2070946A
Cited
US2145507A
Cited
US2400242A
Cited
US2422721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |