Patent US2616977A successfully refreshed from Google Patents.
US2616977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheetsxsheet i
Assignee: —
•
Filing: —
•
Granted: 1952-11-04
•
Expires: 1969-11-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:34
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4902; H04B; H04B1/00; H04B1/69; H04B1/7163; H04B1/717; H04B1/7172; H04B1/7174; H04B1/7176; H04B1/7183; H04L7/00; H04L7/04; H04L7/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1928093A
Cited
US2352634A
Cited
US2418112A
Cited
US2395467A
Cited
US2429613A
Cited
US2418116A
Cited
US2428366A
Cited
US2523703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |