Patent US2253176A successfully refreshed from Google Patents.
US2253176A
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Method and apparatus for production of structures
Assignee: EIDP Inc
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Filing: 1938-08-09
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Granted: 1941-08-19
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Expires: 1958-08-09
Abstract
No abstract record available.
Inventors
- 👤 Graves George De Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:10
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; B; B29; B29B; B29B13/00; B29B13/02; B29B13/022; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/07; B29C48/08; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; D01D1/00; D01D1/04; D01D1/06; D01D1/10; D01D1/103; D01D5/04; Y; Y10; Y10S; Y10S65/00; Y10S65/04
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) | 1944-08-18 | 1945-02-17 | 1945-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-18 | 1949-02-17 | 1949-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-18 | 1953-02-17 | 1953-08-19 | $7700.00 | Window Closed / Lapsed |