US3232181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential area gas cylinder
Assignee: Individual
•
Filing: 1964-07-24
•
Granted: 1966-02-01
•
Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Leland F Blatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:17
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5153; F15B2211/5154; F15B2211/60; F15B2211/615; F15B2211/625; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/77; F15B2211/7716
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2709420A
Cited
US3139008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |