US2685304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sustaining arched diaphragm structure
Assignee: Tokheim Corp
•
Filing: 1951-04-19
•
Granted: 1954-08-03
•
Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 George W Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0081; F04B43/009; F04B43/0054; F04B43/02; F04B43/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US360651A
Cited
GB189627009A
Cited
US768984A
Cited
US1095100A
Cited
US1610473A
Cited
US2052186A
Cited
US2379299A
Cited
US2520771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |