US3373694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder and piston unit having noncollapsible dual rolling diaphragm
Assignee: Bellofram Corp
•
Filing: 1965-10-21
•
Granted: 1968-03-19
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 John F Taplin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:59
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0081; F04B43/009; F04B39/00; F04B39/04; F04B39/041; F04B39/044; F16; F16J; F16J3/00; F16J3/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE456103C
Cited
US2376475A
Cited
US2751850A
Cited
US2685304A
Cited
US2864258A
Cited
US3012546A
Cited
US3039443A
Cited
GB961750A
Cited
US3314594A
Cited
US3208394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |