US2819693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory anchors and supporting hangers therefor
Assignee: Individual
•
Filing: 1955-11-28
•
Granted: 1958-01-14
•
Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Robert A Rath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1727296A
Cited
DE899246C
Cited
US2240117A
Cited
GB655702A
Cited
US2387663A
Cited
US2657651A
Cited
US2785842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |