US2865386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible structure
Assignee: Individual
•
Filing: 1956-07-20
•
Granted: 1958-12-23
•
Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 John M Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/32; E04H15/34; E04H15/44; E04H15/64; Y; Y10; Y10S; Y10S135/00; Y10S135/909
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US462077A
Cited
FR743675A
Cited
US1078587A
Cited
US1520569A
Cited
US1498312A
Cited
US1538064A
Cited
US1579160A
Cited
US2530765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |