US3429272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1967-06-19
•
Granted: 1969-02-25
•
Expires: 1987-06-19
Abstract
No abstract record available.
Inventors
- 👤 Verbon Henry Bryce Wilhite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/02; F04B7/0266; F04B7/0275; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0072; F04B43/08; F04B43/10; F04B43/107; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2604246A
Cited
US2747510A
Cited
US2760436A
Cited
US2814993A
Cited
US2884866A
Cited
US3062153A
Cited
US3359916A
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 |