Patent US2431081A successfully refreshed from Google Patents.
Patent US3390225A successfully refreshed from Google Patents.
US3390225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground electrical vault
Assignee: NEW ENGLAND REALTY CO
•
Filing: 1966-03-28
•
Granted: 1968-06-25
•
Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Robert O Couch
- 👤 David L Wyatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:11
CPC Classifications
H; H02; H02G; H02G9/00; H02G9/10; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995; Y10T137/7017
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US261649A
Cited
US411595A
Cited
US413215A
Cited
US620588A
Cited
CA672647A
Cited
US992377A
Cited
US1131078A
Cited
US1265767A
Cited
FR605438A
Cited
US1793038A
Cited
US2100721A
Cited
US3271710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |