Patent US2939186A successfully refreshed from Google Patents.
US2939186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosure device
Assignee: North American Aviation Corp
•
Filing: 1956-04-09
•
Granted: 1960-06-07
•
Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Leland B Norwood
- 👤 Donald L Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:51
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/5427; B; B64; B64C; B64C1/00; B64C1/14; B64C1/1476; B64C1/1492; E06B3/5436; E06B3/56; E06B3/5454; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/195
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA484372A
Cited
US2696451A
Cited
US2659462A
Cited
US2654685A
Cited
US2760898A
Cited
US2730777A
Cited
US2731220A
Cited
US2784926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |