US2941549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accumulator
Assignee: RTX Corp
•
Filing: 1956-12-31
•
Granted: 1960-06-21
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Mard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:52
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; B; B64; B64C; B64C27/00; F15B2201/00; F15B2201/20; F15B2201/30; F15B2201/315; F15B2201/3156; F15B2201/40; F15B2201/405; F15B2201/4053; F15B2201/4056; F15B2201/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1786856A
Cited
US2401792A
Cited
US2495693A
Cited
US2630834A
Cited
US2721580A
Cited
US2755820A
Cited
US2760518A
Cited
US2883180A
Cited
US2844227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |