US1822037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making insulator racks
Assignee: Hubbard and Co
•
Filing: 1929-09-27
•
Granted: 1931-09-08
•
Expires: 1949-09-27
Abstract
No abstract record available.
Inventors
- 👤 Kerschner Grace Tebay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:21
CPC Classifications
B; B21; B21D; B21D53/00; H; H01; H01B; H01B17/00; H01B17/14; H01B17/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-09-07 | 1935-03-09 | 1935-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-07 | 1939-03-09 | 1939-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-07 | 1943-03-09 | 1943-09-08 | $7700.00 | Window Closed / Lapsed |