US3429057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dryers
Assignee: Proctor and Schwartz Inc
•
Filing: 1966-12-05
•
Granted: 1969-02-25
•
Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 John R Thygeson Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:53
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B21/00; F26B21/20; F26B21/25; F26B21/50; F26B21/55; Y; Y10; Y10S; Y10S55/00; Y10S55/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732631A
Cited
US1037254A
Cited
US2152238A
Cited
FR1149169A
Cited
DE1145572B
Cited
US3181250A
Cited
US3134654A
Cited
US3235931A
Cited
US3319354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |