US2592084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chimney and means for supporting same
Assignee: Individual
•
Filing: 1946-07-16
•
Granted: 1952-04-08
•
Expires: 1966-07-16
Abstract
No abstract record available.
Inventors
- 👤 Richard F Van Alstyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:09
CPC Classifications
E; E04; E04F; E04F17/00; E04F17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US130539A
Cited
US285112A
Cited
US1042085A
Cited
US685615A
Cited
US956897A
Cited
US1085889A
Cited
US2133376A
Cited
US2372707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |