US2639252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making housing for electrical apparatus
Assignee: Lockheed Martin Corp
•
Filing: 1949-02-17
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Granted: 1953-05-19
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Expires: 1969-02-17
Abstract
No abstract record available.
Inventors
- 👤 Simon Eli
- 👤 Frank W Thomas
- 👤 Edward H Burkart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:57
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/34; B; B29; B29C; B29C33/00; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B32; B32B; B32B27/00; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S220/00; Y10S220/14; Y10S264/00; Y10S264/53; Y10S52/00; Y10S52/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF MAKING A LAMINATED ARTICLE COMPRISING PROVIDING LAMINATING MATERIAL CARRYING A WET POLYMERIZABLE UNSATURATED ORGANIC SUBSTANCE CONTAINING AT LEAST TWO GROUPS PER MOLECULE AS THE REACTIVE CONSTITUENTS, SAID GROUPS BEING SELECTED FROM THE CLASS CONSISTING OF VINYL GROUPS AND ALLYL GROUPS, AND SUBSTANCE BEING CAPABLE OF COPOLYMERIZING WITH ISOCYANATE MOLECULES, AND THEN BONDING A CELLULAR PLASTIC LAYER
Claim 2
Independent Claim
59 words
THE METHOD OF MAKING A LAMINATED ARTICLE COMPRISING PROVIDING LAMINATING MATERIAL CARRYING A WET POLYMERIZABLE UNSATURATED ORGANIC SUBSTANCE CONTAINING AT LEAST TWO GROUPS PER MOLECULE AS THE REACTIVE CONSTITUENTS, SAID GROUPS BEING SELECTED FROM THE CLASS CONSISTING OF VINYL GROUPS AND ALLYL GROUPS, AND SUBSTANCE BEING CAPABLE OF COPOLYMERIZING WITH ISOCYANATE MOLECULES, AND THEN BONDING A CELLULAR PLASTIC LAYER
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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) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |