US3456874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam driven compressor
Assignee: Signet Systems Inc
•
Filing: 1967-08-01
•
Granted: 1969-07-22
•
Expires: 1987-08-01
Abstract
No abstract record available.
Inventors
- 👤 William Graper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:43
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0261; F04B27/00; F04B27/02; F04B39/10; F04B39/1073
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1652565A
Cited
US1631425A
Cited
US1696673A
Cited
US2751145A
Cited
US2993641A
Cited
US3211365A
Cited
US3307480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |