Patent US2784012A successfully refreshed from Google Patents.
US2784012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packed sleeve joint for buses
Assignee: HK Porter Co Inc
•
Filing: 1952-05-07
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Granted: 1957-03-05
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Expires: 1972-05-07
Abstract
No abstract record available.
Inventors
- 👤 Stanley C Killian
- 👤 Willard O Edison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:00
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/061; H02G5/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR357535A
Cited
GB257100A
Cited
FR703105A
Cited
US1943496A
Cited
US2313972A
Cited
US2321415A
Cited
US2272115A
Cited
US2421480A
Cited
US2531017A
Cited
US2516743A
Cited
US2532773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |