US2607577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convector for gas heaters
Assignee: A A STRAUB CO Inc
•
Filing: 1948-10-14
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Granted: 1952-08-19
•
Expires: 1968-10-14
Abstract
No abstract record available.
Inventors
- 👤 Augustus A Straub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:43
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0006; C21D9/0025; C21D9/52; C21D9/54; C21D9/663; C21D9/673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR588052A
Cited
US1896286A
Cited
US2081990A
Cited
US2334439A
Cited
US2362823A
Cited
US2414130A
Cited
US2489012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |