Patent US4987428A successfully refreshed from Google Patents.
US2263201A
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Heat insulating means and method of making the same
Assignee: Union Bag and Paper Corp
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Filing: 1939-03-11
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Granted: 1941-11-18
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Expires: 1959-03-11
Abstract
No abstract record available.
Inventors
- 👤 Donald B Wheeler
- 👤 James D Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:15
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7654; E04B1/7658; E04B1/7662; E04B1/7666; E04B1/767; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24488; Y10T428/24802; Y10T428/24851; Y10T428/24934
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) | 1944-11-17 | 1945-05-19 | 1945-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-17 | 1949-05-19 | 1949-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-17 | 1953-05-19 | 1953-11-18 | $7700.00 | Window Closed / Lapsed |