Patent US3564795A successfully refreshed from Google Patents.
US3564795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-cast modular building units with utility ducts
Assignee: Individual
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Filing: 1968-07-25
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Granted: 1971-02-23
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Expires: 1988-07-25
Abstract
Abstract A BUILDING CONSTRUSTION AND METHOD FOR MAKING AND USING PRE-CAST MODULAR STUCTURAL UNITS WHICH CAN BE MASS PRODUCED, ASSEMBLED AND MADE HABITABLE AT A MINIMUM COST. THE BUILDING CONSTRUCTION UNIT CONTEMPLATED IS COMPRISED OF A PLURALITY OF PRE-CAST MODULES HAVING UTILITY DUCTS RUNNING GENERALLY TRANSVERSE TO THE SPAN. THE METHOD OF THE INVENTION CONTEMPLATES A UNIQUE SERIES OF STEPS FOR CASTING THE MODULES AND ASSEMBLING THEM INTO BUILDING UNITS.
Inventors
- 👤 Jesse Vernon Henton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:00
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/348; E04B1/34815; E04B1/34823; E04G; E04G15/00; E04G15/06
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |