US2446429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular phenolic resin
Assignee: General Electric Co
•
Filing: 1944-10-20
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Granted: 1948-08-03
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Expires: 1964-10-20
Abstract
No abstract record available.
Inventors
- 👤 John D Nelson
- 👤 Paul V Steenstrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:07
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/142; C08J9/0061; C08J9/06; C08J2361/00; C08J2361/04; C08J2361/06; Y; Y10; Y10S; Y10S264/00; Y10S264/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |