Patent US2800783A successfully refreshed from Google Patents.
US2800783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
abood
Assignee: —
•
Filing: —
•
Granted: 1957-07-30
•
Expires: 1974-07-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:08
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/06; D04B21/08; D04B27/00; D04B27/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US757851A
Cited
US779109A
Cited
US2107512A
Cited
US2144667A
Cited
US2142908A
Cited
US2159615A
Cited
US2480231A
Cited
US2605625A
Cited
US2680959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |