Patent US2687135A successfully refreshed from Google Patents.
US2687135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage device
Assignee: Individual
•
Filing: 1951-02-14
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Granted: 1954-08-24
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Expires: 1971-02-14
Abstract
No abstract record available.
Inventors
- 👤 Carl J Heim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:28
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/006; E; E05; E05G; E05G5/00; E05G5/006; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/419; B65H2301/4191; B65H2701/00; B65H2701/10; B65H2701/19; B65H2701/1912; E05G2700/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2508159A
Cited
US732337A
Cited
US985516A
Cited
US1178342A
Cited
US1953073A
Cited
US2009385A
Cited
US2602719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |