Patent US1068721A successfully refreshed from Google Patents.
US2440763A
Expired / Lapsed
US
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Building construction
Assignee: Individual
•
Filing: 1945-02-19
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Granted: 1948-05-04
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Expires: 1965-02-19
Abstract
No abstract record available.
Inventors
- 👤 Todhunter Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/02; E04B1/08; E04B1/14; E04B2/00; E04B2/56; E04B1/35; E04B2001/3583
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US318270A
Cited
US2184113A
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US2205725A
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US2095434A
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US2260058A
Cited
US2356309A
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US2362162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |