US2740490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof drain
Assignee: Josam Manufacturing Co
•
Filing: 1952-08-30
•
Granted: 1956-04-03
•
Expires: 1972-08-30
Abstract
No abstract record available.
Inventors
- 👤 Matheis Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:03
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/0404; E04D13/0409; E04D2013/0436
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US988667A
Cited
US1033448A
Cited
US1128528A
Cited
US1380793A
Cited
US2091927A
Cited
US2400070A
Cited
US2618356A
Cited
US2672205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |