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Patent US3520032A successfully refreshed from Google Patents.
US3520032A
Expired / Lapsed
US
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Tendon anchorage
Assignee: HOWLETT MACHINE WORKS
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Filing: 1968-08-12
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Granted: 1970-07-14
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Expires: 1988-08-12
Abstract
No abstract record available.
Inventors
- 👤 George H Howlett
- 👤 James W Howlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; E04C5/12; E04C5/122; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1250101B
Cited
US1620029A
Cited
GB274675A
Cited
US1852381A
Cited
US2763464A
Cited
DE1271960B
Cited
US3449876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |