Patent US3443303A successfully refreshed from Google Patents.
US3443303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for forming a building structure
Assignee: Kingsberry Homes Corp
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Filing: 1966-12-23
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Granted: 1969-05-13
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Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Marshall O Groat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:52
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/49833; Y10T29/49895; Y10T29/49901; Y10T29/49904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2884967A
Cited
US2574163A
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US2626643A
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US2567586A
Cited
US2822841A
Cited
US2754862A
Cited
US3399445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |