US2797747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporator
Assignee: Individual
•
Filing: 1954-06-22
•
Granted: 1957-07-02
•
Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Francis J Rinderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:18
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557300A
Cited
US1398263A
Cited
US1704053A
Cited
DE509467C
Cited
GB440770A
Cited
US2049343A
Cited
US2170036A
Cited
US2251457A
Cited
US2419905A
Cited
US2575688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |