Patent US2772474A successfully refreshed from Google Patents.
US3247629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catenary roof structure
Assignee: Behlen Manufacturing Co Inc
•
Filing: 1962-06-05
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Granted: 1966-04-26
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Walter D Behlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:33
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04C; E04C3/00; E04C3/38; E04C3/40
Claims Analysis
Total Claims: 0
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US2832362A
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |