US2502736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake vent
Assignee: Individual
•
Filing: 1948-12-22
•
Granted: 1950-04-04
•
Expires: 1968-12-22
Abstract
No abstract record available.
Inventors
- 👤 Reuben J Marcoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1426; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/75
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US323587A
Cited
US1335929A
Cited
US1538645A
Cited
US1874083A
Cited
US1766876A
Cited
US1913974A
Cited
US1975316A
Cited
US2314003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |