US3446532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair
Assignee: HAROLD W CRAMER
•
Filing: 1967-03-13
•
Granted: 1969-05-27
•
Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Harold W Cramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/024; A47C3/00; A47C3/02; A47C3/025; A47C3/026; A47C9/00; A47C9/002; A47C9/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US603734A
Cited
US639076A
Cited
US694875A
Cited
US941160A
Cited
US1836630A
Cited
US2838093A
Cited
US3057660A
Cited
US2978710A
Cited
US3001823A
Cited
US3121592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |