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Patent US2717436A successfully refreshed from Google Patents.
US2717436A
Expired / Lapsed
US
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Outer form for house form assembly
Assignee: Keppel LeTourneau USA Inc
•
Filing: 1952-02-12
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Granted: 1955-09-13
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Expires: 1972-02-12
Abstract
No abstract record available.
Inventors
- 👤 Tourneau Robert G Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:32
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1566263A
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US1983757A
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US2228123A
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US2502789A
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |