US3196499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich panel fasteners
Assignee: Dow Chemical Co
•
Filing: 1962-05-21
•
Granted: 1965-07-27
•
Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Irving S Houvener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:00
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/02; E04B1/14; E04B1/38; E04B1/61; E04B1/6108; E04B1/6116
Claims Analysis
Total Claims: 0
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US2730772A
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GB784319A
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US2879560A
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |