Patent US3492113A successfully refreshed from Google Patents.
US3419954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brazing attachments onto rotor blade spars
Assignee: Parsons Corp
•
Filing: 1966-02-23
•
Granted: 1969-01-07
•
Expires: 1986-02-23
Abstract
No abstract record available.
Inventors
- 👤 Winston E Brownlee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:08
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/20; B23K2101/00; B23K2101/04; B23K2101/06; B23K2101/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1916989A
Cited
US2062841A
Cited
US2040092A
Cited
US2615236A
Cited
US2723445A
Cited
US2932884A
Cited
US3055097A
Cited
US3239011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |