US3516231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aftercooler
Assignee: Brakemaster Corp
•
Filing: 1968-05-24
•
Granted: 1970-06-23
•
Expires: 1988-05-24
Abstract
No abstract record available.
Inventors
- 👤 Robert H George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:16
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/26; F; F04; F04B; F04B39/00; F04B39/06; F04B39/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102; Y10T137/3105
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US423097A
Cited
US1458005A
Cited
US1735441A
Cited
US2535760A
Cited
US2687841A
Cited
US2537224A
Cited
US2509880A
Cited
US2812860A
Cited
US2840183A
Cited
US3093467A
Cited
US3002584A
Cited
US3067762A
Cited
US3343345A
Cited
US3402529A
Cited
US3426508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |