US2603972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relative humidity meter
Assignee: Individual
•
Filing: 1946-11-09
•
Granted: 1952-07-22
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Kahn Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:50
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/62; G01N25/64; Y; Y10; Y10S; Y10S236/00; Y10S236/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2294540A
Cited
US1453688A
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US1855774A
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US1946702A
Cited
US1986316A
Cited
US2106083A
Cited
US2215218A
Cited
US2177630A
Cited
US2265767A
Cited
US2343878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |