Patent US3526071A successfully refreshed from Google Patents.
US3526071A
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Panel for curtain walls and method of jointing corners of the same
Assignee: KOGYO GOMU CO Ltd
•
Filing: 1969-02-17
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Granted: 1970-09-01
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Expires: 1989-02-17
Abstract
No abstract record available.
Inventors
- 👤 Hiroshi Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:54
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6812; E04B2/00; E04B2/88; E04B2/90; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/62; E06B3/6205; E06B2003/6217; E06B2003/6223; E06B2003/625; E06B2003/6264
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3403488A
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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) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |