US3445905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dandy roll
Assignee: H M SPENCER Inc
•
Filing: 1966-08-31
•
Granted: 1969-05-27
•
Expires: 1986-08-31
Abstract
No abstract record available.
Inventors
- 👤 John A Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:34
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/44; D21F1/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US303404A
Cited
US813835A
Cited
US1815939A
Cited
US1906284A
Cited
US1933154A
Cited
US1969000A
Cited
US2025445A
Cited
US2312678A
Cited
US2335831A
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 |