US2700987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure controlled condensation drain trap
Assignee: Individual
•
Filing: 1952-03-07
•
Granted: 1955-02-01
•
Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 Edward J Whalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:32
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/12; F16T1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102; Y10T137/3105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US578873A
Cited
US2548236A
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US2241056A
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US2316052A
Cited
US2494434A
Cited
US2598361A
Cited
US2496215A
Cited
US2509597A
Cited
US2585045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |