US2558002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volume compression system
Assignee: International Standard Electric Corp
•
Filing: 1947-01-25
•
Granted: 1951-06-26
•
Expires: 1967-01-25
Abstract
No abstract record available.
Inventors
- 👤 Ross Colin Pemberton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
H; H03; H03G; H03G7/00; H03G7/02; H03G7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1947209A
Cited
US2193966A
Cited
US2323634A
Cited
US2256071A
Cited
US2244695A
Cited
US2312260A
Cited
US2432878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |