US2728538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drive powder catapult
Assignee: Individual
•
Filing: 1953-09-23
•
Granted: 1955-12-27
•
Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 Mazis Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:44
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/04; B64F1/06; Y; Y10; Y10S; Y10S60/00; Y10S60/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525434A
Cited
US816643A
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US1225702A
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US1016603A
Cited
US2289766A
Cited
US2373972A
Cited
US2489315A
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 |