Patent US2755059A successfully refreshed from Google Patents.
US2755059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand-operated valve, in particular for vacuum plants
Assignee: Individual
•
Filing: 1950-05-06
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Granted: 1956-07-17
•
Expires: 1970-05-06
Abstract
No abstract record available.
Inventors
- 👤 Auwarter Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:12
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US168980A
Cited
US351828A
Cited
US1183790A
Cited
US1404103A
Cited
US1681981A
Cited
US1509339A
Cited
US1779938A
Cited
US1629303A
Cited
US1886677A
Cited
US2509436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |