Patent US3990452A successfully refreshed from Google Patents.
US2823683A
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US
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Collapsible building structures
Assignee: Individual
•
Filing: 1952-11-17
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Granted: 1958-02-18
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Expires: 1972-11-17
Abstract
No abstract record available.
Inventors
- 👤 Smith Charles Aquila Vincent
- 👤 Feasey John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:46
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/32; E04H15/34; E04H15/36; E04H15/40; E04H15/405; A; A01; A01G; A01G9/00; A01G9/14; A01G9/16; E04B; E04B1/00; E04B1/343; E04B1/34315; E04B1/34326; E04B1/344; E04B1/3441; E04H15/44; E04H15/48; E04H15/52; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10S; Y10S135/00; Y10S135/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1608242A
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US1747362A
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US2036033A
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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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |