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US2871997A
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Low pitch rigid frame building
Assignee: Butler Manufacturing Co
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Filing: 1957-06-11
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Granted: 1959-02-03
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Expires: 1977-06-11
Abstract
No abstract record available.
Inventors
- 👤 Harold G Simpson
- 👤 Norman W Rimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:59
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/24; E04B7/00; E04B7/02; E04B7/022; E04C; E04C3/00; E04C3/38; E04C3/40; E04B1/2403; E04B2001/2409; E04B2001/2415; E04B2001/2448; E04B2001/2457; E04B2001/2463; E04B2001/2487; E04B2001/2496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189416127A
Cited
US2815831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |