Patent US3158738A successfully refreshed from Google Patents.
US2434555A
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Electrical insulator
Assignee: Westinghouse Electric Corp
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Filing: 1944-05-16
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Granted: 1948-01-13
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Expires: 1964-05-16
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Fischer
- 👤 John D Harnish
- 👤 Jr Ralston Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B37/00; C04B37/02; C04B37/023; C04B37/025; C04B37/026; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/06; C04B2237/12; C04B2237/124; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/343; C04B2237/50; C04B2237/59; C04B2237/592; C04B2237/64; C04B2237/70; C04B2237/708; C04B2237/72; C04B2237/76; C04B2237/765; C04B2237/82
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |