Patent US4855762A successfully refreshed from Google Patents.
Patent US2745276A successfully refreshed from Google Patents.
US2745276A
Expired / Lapsed
US
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Pre-cast building units
Assignee: Individual
•
Filing: 1949-05-07
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Granted: 1956-05-15
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Expires: 1969-05-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Kuhlman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:48
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3762A
Cited
US729918A
Cited
US835669A
Cited
US858988A
Cited
GB140066A
Cited
DE501641C
Cited
FR686203A
Cited
US2184714A
Cited
US2181814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |