Patent US2764707A successfully refreshed from Google Patents.
Patent US2638748A successfully refreshed from Google Patents.
US2638748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master cylinder with fluid-volume compensating valve in piston
Assignee: Avox Systems Inc
•
Filing: 1948-08-13
•
Granted: 1953-05-19
•
Expires: 1968-08-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:58
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22; F; F15; F15B; F15B7/00; F15B7/06; F15B7/08; F16; F16D; F16D25/00; F16D25/08; F16D2025/081
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2020465A
Cited
US2060846A
Cited
US1997100A
Cited
US2004078A
Cited
US2041065A
Cited
US2120073A
Cited
US2152499A
Cited
US2152345A
Cited
US2242096A
Cited
US2219336A
Cited
US2248426A
Cited
US2326116A
Cited
US2310976A
Cited
US2447142A
Cited
US2541312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |