US2193921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulator
Assignee: Individual
•
Filing: 1937-11-17
•
Granted: 1940-03-19
•
Expires: 1957-11-17
Abstract
No abstract record available.
Inventors
- 👤 Walter E Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:35
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/22; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25
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) | 1943-03-19 | 1943-09-18 | 1944-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-19 | 1947-09-18 | 1948-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-19 | 1951-09-18 | 1952-03-19 | $7700.00 | Window Closed / Lapsed |