US2855193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator heat treatment furnace construction
Assignee: C I HAYES Inc
•
Filing: 1955-03-15
•
Granted: 1958-10-07
•
Expires: 1975-03-15
Abstract
No abstract record available.
Inventors
- 👤 Wesley R Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1073235A
Cited
US1699784A
Cited
US2458084A
Cited
US2341766A
Cited
US2547755A
Cited
US2671160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |