US3021796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer mechanism
Assignee: LINK BCLT Co
•
Filing: 1959-01-09
•
Granted: 1962-02-20
•
Expires: 1979-01-09
Abstract
No abstract record available.
Inventors
- 👤 Bert B Parshall
- 👤 Clifford A Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:36
CPC Classifications
B; B61; B61B; B61B10/00; B61B10/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US251317A
Cited
US843896A
Cited
US2714355A
Cited
US2660127A
Cited
US2782727A
Cited
US2803198A
Cited
FR1135906A
Cited
US2878758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |