US3420559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dowel locks
Assignee: GLADYS SCHAEFER
•
Filing: 1966-09-29
•
Granted: 1969-01-07
•
Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 George William Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:30
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/24; F16B13/00; F16B13/04; F16B13/08; F16B13/0816; A; A47; A47B; A47B2230/00; A47B2230/0029; A47B2230/0037; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968; Y10S411/969; Y10T; Y10T403/00; Y10T403/49; Y10T403/4916; Y10T403/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005895A
Cited
FR1335853A
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 |