US3500364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc pack with card label
Assignee: Disc Pack Corp
•
Filing: 1967-03-02
•
Granted: 1970-03-10
•
Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles W David
- 👤 Richard J Penny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:26
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/74; G11B5/82; G11B5/825; G11B23/00; G11B23/02; G11B23/03; G11B23/032; G11B23/0323; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/216; Y10T428/24; Y10T428/24273; Y10T428/24298
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US876785A
Cited
US1940088A
Cited
US2091346A
Cited
US3176281A
Cited
US3312005A
Cited
US3230649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |