US1955002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid equalizer for compression machines
Assignee: AT&T Inc
•
Filing: 1928-12-10
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Granted: 1934-04-17
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Expires: 1948-12-10
Abstract
No abstract record available.
Inventors
- 👤 Irwin Bernard Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:45
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/06; B30B15/065; B30B15/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-04-16 | 1937-10-16 | 1938-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-04-16 | 1941-10-16 | 1942-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-04-16 | 1945-10-16 | 1946-04-17 | $7700.00 | Window Closed / Lapsed |