US1787453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulator and core
Assignee: Individual
•
Filing: 1928-10-20
•
Granted: 1931-01-06
•
Expires: 1948-10-20
Abstract
No abstract record available.
Inventors
- 👤 Murray Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:49
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7608; E04B1/7612; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/239; Y10T428/24; Y10T428/2419; Y10T428/24215; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24727
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) | 1934-01-05 | 1934-07-07 | 1935-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-05 | 1938-07-07 | 1939-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-05 | 1942-07-07 | 1943-01-06 | $7700.00 | Window Closed / Lapsed |